{"title":"Retro Arms","description":"\u003cdiv class=\"term-description\"\u003e\n\u003cp\u003e\u003cstrong data-start=\"812\" data-end=\"826\"\u003eRetro Arms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis known worldwide for precision CNC-machined airsoft upgrades, including gearboxes, shims, pistons, nozzles, and internal parts. Built from aircraft-grade aluminum and premium materials, Retro Arms parts are trusted by serious players who demand durability, performance, and accuracy from their AEG builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv data-rocket-location-hash=\"eaf328c64cd0551e3ba0ce37b431330e\" class=\"woocommerce-notices-wrapper\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"products row row-small large-columns-6 medium-columns-3 small-columns-2 has-equal-box-heights\"\u003e\n\u003cdiv class=\"product-small col has-hover product type-product post-3236 status-publish first instock product_cat-hop-up product_cat-retro-arms-airsoft-upgrades product_tag-hop-up product_tag-retro-arms has-post-thumbnail taxable shipping-taxable purchasable product-type-simple\"\u003e\n\u003cdiv class=\"col-inner\"\u003e\n\u003cdiv class=\"badge-container absolute left top z-1\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"wlfmc-add-to-wishlist wlfmc-add-to-wishlist-3236 wlfmc-loop-btn wlfmc_position_image_top_right wlfmc-btn-type-icon wlfmc-top-of-image image_top_right show-remove-after-add\" data-remove-url=\"?remove_from_wishlist=#product_id\" data-add-url=\"?add_to_wishlist=#product_id\" data-enable-outofstock=\"1\" data-popup-id=\"\"\u003e\n\u003cdiv class=\"wlfmc-add-button  wlfmc-addtowishlist  wlfmc-tooltip wlfmc-tooltip-top\" data-tooltip-text=\"Add To Wishlist\" data-tooltip-type=\"default\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"retro-arms-cnc-machined-aluminum-rotary-hop-up-unit-for-m4-series-airsoft-aegs-1","title":"Retro Arms CNC Machined Aluminum Rotary Hop-Up Unit for M4 Series Airsoft AEGs","description":"\u003cp data-start=\"0\" data-end=\"118\"\u003e\u003cstrong data-start=\"0\" data-end=\"116\"\u003eRetro Arms CNC Machined Aluminum Rotary Hop-Up Unit for M4 AEGs — Unmatched Precision, Strength, and Consistency\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp data-start=\"120\" data-end=\"548\"\u003eEnhance your rifle’s accuracy and reliability with the \u003cstrong data-start=\"175\" data-end=\"249\"\u003eRetro Arms CNC Machined Aluminum Rotary Hop-Up Unit for M4 Series AEGs\u003c\/strong\u003e — a premium upgrade engineered for airsoft players who demand precision, durability, and performance. Designed to outperform traditional plastic hop-up chambers, this rotary-style hop-up unit delivers consistent backspin adjustment, rock-solid air seal, and flawless fitment for your M4 platform.\u003c\/p\u003e\r\n\u003cp data-start=\"550\" data-end=\"767\"\u003eMade from \u003cstrong data-start=\"560\" data-end=\"594\"\u003ehigh-grade EN AW 7075 aluminum\u003c\/strong\u003e — one of the toughest alloys available — and precision CNC-machined to exact tolerances, this hop-up unit represents the pinnacle of airsoft craftsmanship and innovation.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"769\" data-end=\"772\"\u003e\r\n\r\n\u003ch3 data-start=\"774\" data-end=\"835\"\u003e\u003cstrong data-start=\"778\" data-end=\"835\"\u003eBuilt to Last — CNC Machined from EN AW 7075 Aluminum\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"837\" data-end=\"1189\"\u003eUnlike conventional hop-up chambers that rely on fragile plastic components, the Retro Arms hop-up unit is \u003cstrong data-start=\"944\" data-end=\"991\"\u003efully CNC machined from EN AW 7075 aluminum\u003c\/strong\u003e, often referred to as “aircraft-grade aluminum.” This metal is renowned for its exceptional strength-to-weight ratio and corrosion resistance, ensuring long-term performance even under heavy use.\u003c\/p\u003e\r\n\u003cp data-start=\"1191\" data-end=\"1505\"\u003eThe rigid aluminum body minimizes flex and deformation, maintaining a perfect alignment between your inner barrel and gearbox. This means \u003cstrong data-start=\"1329\" data-end=\"1412\"\u003etighter shot groupings, improved FPS stability, and superior air seal integrity\u003c\/strong\u003e — key factors for competitive players or precision builds like DMRs and long-range rifles.\u003c\/p\u003e\r\n\u003cp data-start=\"1507\" data-end=\"1795\"\u003eEvery component is carefully machined to exact tolerances, ensuring a perfect drop-in fit with most \u003cstrong data-start=\"1607\" data-end=\"1635\"\u003eM4 and M16 AEG platforms\u003c\/strong\u003e. The result is a hop-up chamber that not only improves accuracy but also withstands years of high-intensity gameplay without wear or performance degradation.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"1797\" data-end=\"1800\"\u003e\r\n\r\n\u003ch3 data-start=\"1802\" data-end=\"1866\"\u003e\u003cstrong data-start=\"1806\" data-end=\"1866\"\u003eRotary Hop-Up Design for Effortless Precision Adjustment\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"1868\" data-end=\"2129\"\u003eThe \u003cstrong data-start=\"1872\" data-end=\"1901\"\u003erotary hop-up dial system\u003c\/strong\u003e is one of the standout features of this Retro Arms unit. Instead of relying on older slider-based mechanisms that can shift during gameplay, the rotary design allows for \u003cstrong data-start=\"2072\" data-end=\"2126\"\u003efine-tuned, secure, and repeatable hop adjustments\u003c\/strong\u003e.\u003c\/p\u003e\r\n\u003cp data-start=\"2131\" data-end=\"2363\"\u003eWith each click, you can easily control the amount of backspin applied to your BBs, ensuring consistent accuracy whether you’re using lightweight .20g rounds or heavier precision-grade .32g and .36g BBs for long-range engagements.\u003c\/p\u003e\r\n\u003cp data-start=\"2365\" data-end=\"2540\"\u003eThis user-friendly system maintains its setting even during rapid fire, full-auto bursts, or transport — so you spend less time re-tuning and more time dominating the field.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"2542\" data-end=\"2545\"\u003e\r\n\r\n\u003ch3 data-start=\"2547\" data-end=\"2605\"\u003e\u003cstrong data-start=\"2551\" data-end=\"2605\"\u003eEngineered for Compatibility and Easy Installation\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"2607\" data-end=\"2930\"\u003eThe \u003cstrong data-start=\"2611\" data-end=\"2648\"\u003eRetro Arms CNC Rotary Hop-Up Unit\u003c\/strong\u003e is designed as a \u003cstrong data-start=\"2666\" data-end=\"2689\"\u003edrop-in replacement\u003c\/strong\u003e for most M4 and M16 AEGs, including popular brands that follow Tokyo Marui specifications. It’s compatible with nearly all standard inner barrels, hop-up buckings, and Version 2 gearboxes, giving players a highly adaptable upgrade option.\u003c\/p\u003e\r\n\u003cp data-start=\"2932\" data-end=\"3135\"\u003eWhile the unit does \u003cstrong data-start=\"2952\" data-end=\"2977\"\u003enot include a bucking\u003c\/strong\u003e, it works flawlessly with a wide range of aftermarket hop-up rubbers, allowing you to customize your setup for different FPS ranges and field requirements.\u003c\/p\u003e\r\n\u003cp data-start=\"3137\" data-end=\"3426\"\u003eEach unit comes with \u003cstrong data-start=\"3158\" data-end=\"3184\"\u003eall necessary hardware\u003c\/strong\u003e, making installation straightforward for experienced technicians and hobbyists alike. The precision machining ensures smooth fitment without unnecessary modification, though professional installation is always recommended for best results.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"3428\" data-end=\"3431\"\u003e\r\n\r\n\u003ch3 data-start=\"3433\" data-end=\"3471\"\u003e\u003cstrong data-start=\"3437\" data-end=\"3471\"\u003eEnhanced Air Seal and Accuracy\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"3473\" data-end=\"3736\"\u003eThe hop-up chamber’s tight tolerances and rigid construction create a \u003cstrong data-start=\"3543\" data-end=\"3564\"\u003esuperior air seal\u003c\/strong\u003e, minimizing energy loss during compression. This leads to improved FPS consistency and a more stable BB trajectory, even under varying temperatures and field conditions.\u003c\/p\u003e\r\n\u003cp data-start=\"3738\" data-end=\"3997\"\u003ePair it with a high-quality hop-up bucking and inner barrel for the ultimate accuracy upgrade. Players will immediately notice \u003cstrong data-start=\"3865\" data-end=\"3936\"\u003etighter shot groupings, improved range, and reduced FPS fluctuation\u003c\/strong\u003e, making it a must-have component for serious AEG builders.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"3999\" data-end=\"4002\"\u003e\r\n\r\n\u003ch3 data-start=\"4004\" data-end=\"4033\"\u003e\u003cstrong data-start=\"4008\" data-end=\"4033\"\u003eWhy Choose Retro Arms\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"4035\" data-end=\"4314\"\u003eRetro Arms is a trusted name in the airsoft upgrade community, known for its \u003cstrong data-start=\"4112\" data-end=\"4187\"\u003emeticulous CNC machining, durable materials, and innovative engineering\u003c\/strong\u003e. Every part they produce undergoes strict quality control to ensure perfect fitment, longevity, and performance enhancement.\u003c\/p\u003e\r\n\u003cp data-start=\"4316\" data-end=\"4513\"\u003eThe \u003cstrong data-start=\"4320\" data-end=\"4357\"\u003eRetro Arms CNC Rotary Hop-Up Unit\u003c\/strong\u003e continues that legacy — giving players a professional-grade component built to perform in both high-speed CQB skirmishes and long-range field operations.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"4515\" data-end=\"4518\"\u003e\r\n\r\n\u003ch3 data-start=\"4520\" data-end=\"4543\"\u003e\u003cstrong data-start=\"4524\" data-end=\"4541\"\u003eKey Features:\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cul data-start=\"4544\" data-end=\"4996\"\u003e\r\n \t\u003cli data-start=\"4544\" data-end=\"4627\"\u003e\r\n\u003cp data-start=\"4546\" data-end=\"4627\"\u003e\u003cstrong data-start=\"4546\" data-end=\"4587\"\u003eCNC machined from EN AW 7075 aluminum\u003c\/strong\u003e for unmatched strength and durability\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4628\" data-end=\"4691\"\u003e\r\n\u003cp data-start=\"4630\" data-end=\"4691\"\u003e\u003cstrong data-start=\"4630\" data-end=\"4658\"\u003eRotary hop-up adjustment\u003c\/strong\u003e for precise, consistent tuning\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4692\" data-end=\"4754\"\u003e\r\n\u003cp data-start=\"4694\" data-end=\"4754\"\u003e\u003cstrong data-start=\"4694\" data-end=\"4715\"\u003eEnhanced air seal\u003c\/strong\u003e for stable FPS and improved accuracy\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4755\" data-end=\"4814\"\u003e\r\n\u003cp data-start=\"4757\" data-end=\"4814\"\u003e\u003cstrong data-start=\"4757\" data-end=\"4772\"\u003eDrop-in fit\u003c\/strong\u003e for most M4 \/ M16 Tokyo Marui-spec AEGs\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4815\" data-end=\"4877\"\u003e\r\n\u003cp data-start=\"4817\" data-end=\"4877\"\u003e\u003cstrong data-start=\"4817\" data-end=\"4842\"\u003eAll hardware included\u003c\/strong\u003e for straightforward installation\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4878\" data-end=\"4963\"\u003e\r\n\u003cp data-start=\"4880\" data-end=\"4963\"\u003e\u003cstrong data-start=\"4880\" data-end=\"4938\"\u003eCompatible with most hop-up buckings and inner barrels\u003c\/strong\u003e (bucking not included)\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"4964\" data-end=\"4996\"\u003e\r\n\u003cp data-start=\"4966\" data-end=\"4996\"\u003e\u003cstrong data-start=\"4966\" data-end=\"4983\"\u003eManufacturer:\u003c\/strong\u003e Retro Arms\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-start=\"4998\" data-end=\"5001\"\u003e\r\n\r\n\u003ch3 data-start=\"5003\" data-end=\"5041\"\u003e\u003cstrong data-start=\"5007\" data-end=\"5041\"\u003eUpgrade Your Rifle’s Precision\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"5043\" data-end=\"5415\"\u003eThe \u003cstrong data-start=\"5047\" data-end=\"5114\"\u003eRetro Arms CNC Machined Aluminum Rotary Hop-Up Unit for M4 AEGs\u003c\/strong\u003e is the ultimate upgrade for airsoft enthusiasts looking to elevate their rifle’s accuracy, reliability, and performance. With its precision machining, durable aluminum body, and intuitive rotary adjustment, this hop-up chamber provides a rock-solid platform for consistent accuracy shot after shot.\u003c\/p\u003e\r\n\u003cp data-start=\"5417\" data-end=\"5642\"\u003eWhether you’re fine-tuning a competition-grade build or replacing a stock unit, Retro Arms delivers \u003cstrong data-start=\"5517\" data-end=\"5581\"\u003eprofessional-level precision, reliability, and build quality\u003c\/strong\u003e — a true investment in your rifle’s long-term performance.\u003c\/p\u003e","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47468096454886,"sku":null,"price":65.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/dd975aa2-ra-59004b-removebg-preview.png?v=1774002133"},{"product_id":"retro-arms-cz-billet-cnc-8mm-ver-2-gearbox-shell-for-vfc-quick-change-spring-series-airsoft-aeg-rifles-1","title":"Retro Arms CZ Billet CNC 8mm Ver.2 Gearbox Shell for VFC Quick Change Spring Series Airsoft AEG Rifles","description":"\u003cp data-start=\"756\" data-end=\"1185\"\u003eWhen only the strongest, most precisely engineered components will do, the \u003cstrong data-start=\"831\" data-end=\"883\"\u003eRetro Arms CZ Billet CNC 8mm Ver.2 Gearbox Shell\u003c\/strong\u003e is the ultimate upgrade for Airsoft builders who demand reliability, consistency, and power. Designed specifically for \u003cstrong data-start=\"1003\" data-end=\"1048\"\u003eVFC Quick Change Spring Series AEG rifles\u003c\/strong\u003e, this gearbox shell takes performance tuning to a professional level with its aerospace-grade construction and thoughtful engineering.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"1187\" data-end=\"1190\"\u003e\r\n\r\n\u003ch3 data-start=\"1192\" data-end=\"1249\"\u003e\u003cstrong data-start=\"1196\" data-end=\"1247\"\u003eAerospace-Grade 7075 T651 Aluminum Construction\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"1251\" data-end=\"1643\"\u003eUnlike standard cast or pot metal gearboxes, the Retro Arms CZ Ver.2 shell is \u003cstrong data-start=\"1329\" data-end=\"1399\"\u003eCNC machined from a single solid block of EN AW 7075 T651 aluminum\u003c\/strong\u003e — a material often used in aircraft and high-stress engineering applications. This billet aluminum provides superior \u003cstrong data-start=\"1517\" data-end=\"1572\"\u003erigidity, wear resistance, and dimensional accuracy\u003c\/strong\u003e, making it one of the toughest gearbox shells available for Airsoft.\u003c\/p\u003e\r\n\u003cp data-start=\"1645\" data-end=\"1973\"\u003eThe billet machining process ensures ultra-tight tolerances, giving you \u003cstrong data-start=\"1717\" data-end=\"1743\"\u003eperfect gear alignment\u003c\/strong\u003e, \u003cstrong data-start=\"1745\" data-end=\"1775\"\u003esmooth mechanical movement\u003c\/strong\u003e, and \u003cstrong data-start=\"1781\" data-end=\"1828\"\u003emaximum strength under heavy spring tension\u003c\/strong\u003e. Combined with a clean, matte anodized finish, this gearbox shell is both visually stunning and engineered to last for years of demanding use.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"1975\" data-end=\"1978\"\u003e\r\n\r\n\u003ch3 data-start=\"1980\" data-end=\"2029\"\u003e\u003cstrong data-start=\"1984\" data-end=\"2027\"\u003eBuilt to Withstand Extreme Power Levels\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"2031\" data-end=\"2366\"\u003eRetro Arms has reinforced key stress points throughout the gearbox to counteract the immense wear that comes from \u003cstrong data-start=\"2145\" data-end=\"2172\"\u003ehigh-performance builds\u003c\/strong\u003e running \u003cstrong data-start=\"2181\" data-end=\"2205\"\u003eM140 to M160 springs\u003c\/strong\u003e. The result is a gearbox shell that can handle \u003cstrong data-start=\"2253\" data-end=\"2291\"\u003eextreme torque and high-RPS setups\u003c\/strong\u003e without cracking or flexing — even after prolonged, high-stress testing.\u003c\/p\u003e\r\n\u003cp data-start=\"2368\" data-end=\"2688\"\u003eThe \u003cstrong data-start=\"2372\" data-end=\"2405\"\u003epre-radiused cylinder windows\u003c\/strong\u003e help evenly distribute the impact force from piston cycling, significantly reducing the risk of micro-fractures or fatigue cracks. For Airsofters pushing their rifles to the limit, this extra layer of structural security means long-term reliability with fewer maintenance worries.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"2690\" data-end=\"2693\"\u003e\r\n\r\n\u003ch3 data-start=\"2695\" data-end=\"2750\"\u003e\u003cstrong data-start=\"2699\" data-end=\"2748\"\u003eQuick-Change Ball-Bearing Spring Guide System\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"2752\" data-end=\"3127\"\u003eTuning flexibility is key for modern AEG builds, and Retro Arms delivers with an integrated \u003cstrong data-start=\"2844\" data-end=\"2893\"\u003equick-change ball-bearing spring guide system\u003c\/strong\u003e. This feature allows for \u003cstrong data-start=\"2919\" data-end=\"2955\"\u003erapid FPS and spring adjustments\u003c\/strong\u003e without needing to completely disassemble the gearbox — saving time and effort whether you’re switching from CQB to field play or fine-tuning your rifle for competition.\u003c\/p\u003e\r\n\u003cp data-start=\"3129\" data-end=\"3299\"\u003eThis system also improves compression consistency and reduces strain on the spring, maintaining performance stability and extending the lifespan of your internal parts.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"3301\" data-end=\"3304\"\u003e\r\n\r\n\u003ch3 data-start=\"3306\" data-end=\"3363\"\u003e\u003cstrong data-start=\"3310\" data-end=\"3361\"\u003eOptimized for Clean Wiring and Easy Maintenance\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"3365\" data-end=\"3612\"\u003eRetro Arms took maintenance and user convenience seriously. \u003cstrong data-start=\"3425\" data-end=\"3449\"\u003eDeeper wire channels\u003c\/strong\u003e have been machined along the base of the gearbox to simplify cable routing, ensuring that your wiring remains neatly secured and clear of internal moving parts.\u003c\/p\u003e\r\n\u003cp data-start=\"3614\" data-end=\"3813\"\u003eThis design not only improves safety and reliability but also enhances airflow and cooling around the electronics — particularly useful for builds utilizing \u003cstrong data-start=\"3771\" data-end=\"3810\"\u003ehigh-speed motors or MOSFET systems\u003c\/strong\u003e.\u003c\/p\u003e\r\n\u003cp data-start=\"3815\" data-end=\"4060\"\u003eAdditionally, the gearbox’s \u003cstrong data-start=\"3843\" data-end=\"3872\"\u003e8mm bearing compatibility\u003c\/strong\u003e ensures smoother gear rotation, reduced friction, and greater mechanical efficiency. The result? \u003cstrong data-start=\"3970\" data-end=\"4058\"\u003eCrisper trigger response, quieter operation, and longer-lasting internal components.\u003c\/strong\u003e\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"4062\" data-end=\"4065\"\u003e\r\n\r\n\u003ch3 data-start=\"4067\" data-end=\"4113\"\u003e\u003cstrong data-start=\"4071\" data-end=\"4111\"\u003eEngineered and Tested for Perfection\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"4115\" data-end=\"4408\"\u003eRetro Arms is known for setting the gold standard in Airsoft CNC machining, and this gearbox shell is no exception. Each unit undergoes \u003cstrong data-start=\"4251\" data-end=\"4303\"\u003eextensive stress testing with M160-rated springs\u003c\/strong\u003e, confirming its ability to handle extreme compression and recoil cycles with zero deformation or wear.\u003c\/p\u003e\r\n\u003cp data-start=\"4410\" data-end=\"4561\"\u003eStainless steel connecting bolts reinforce the structure further, ensuring precise alignment and long-term durability even after thousands of rounds.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"4563\" data-end=\"4566\"\u003e\r\n\r\n\u003ch3 data-start=\"4568\" data-end=\"4623\"\u003e\u003cstrong data-start=\"4572\" data-end=\"4621\"\u003eProfessional-Grade Build for Elite Airsofters\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"4625\" data-end=\"4955\"\u003eWhile designed for plug-and-play compatibility with \u003cstrong data-start=\"4677\" data-end=\"4709\"\u003eVFC Quick Change Spring AEGs\u003c\/strong\u003e, the precision of this gearbox means \u003cstrong data-start=\"4747\" data-end=\"4785\"\u003esome minor fitting may be required\u003c\/strong\u003e depending on your rifle brand or internal configuration. For this reason, \u003cstrong data-start=\"4860\" data-end=\"4904\"\u003eprofessional installation is recommended\u003c\/strong\u003e to ensure a perfect fit and optimal performance.\u003c\/p\u003e\r\n\u003cp data-start=\"4957\" data-end=\"5182\"\u003eOnce properly installed, the \u003cstrong data-start=\"4986\" data-end=\"5022\"\u003eRetro Arms CZ Billet CNC Gearbox\u003c\/strong\u003e becomes the ultimate foundation for any high-end M4 or M16 Airsoft AEG build — a platform built to perform reliably under even the most punishing conditions.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"5184\" data-end=\"5187\"\u003e\r\n\r\n\u003ch3 data-start=\"5189\" data-end=\"5214\"\u003e\u003cstrong data-start=\"5193\" data-end=\"5212\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cul data-start=\"5215\" data-end=\"5646\"\u003e\r\n \t\u003cli data-start=\"5215\" data-end=\"5250\"\u003e\r\n\u003cp data-start=\"5217\" data-end=\"5250\"\u003e\u003cstrong data-start=\"5217\" data-end=\"5234\"\u003eManufacturer:\u003c\/strong\u003e Retro Arms CZ\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"5251\" data-end=\"5318\"\u003e\r\n\u003cp data-start=\"5253\" data-end=\"5318\"\u003e\u003cstrong data-start=\"5253\" data-end=\"5271\"\u003eCompatibility:\u003c\/strong\u003e VFC Quick Change Spring Series M4 \/ M16 AEGs\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"5319\" data-end=\"5381\"\u003e\r\n\u003cp data-start=\"5321\" data-end=\"5381\"\u003e\u003cstrong data-start=\"5321\" data-end=\"5334\"\u003eMaterial:\u003c\/strong\u003e CNC Machined EN AW 7075 T651 Billet Aluminum\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"5382\" data-end=\"5407\"\u003e\r\n\u003cp data-start=\"5384\" data-end=\"5407\"\u003e\u003cstrong data-start=\"5384\" data-end=\"5401\"\u003eBearing Size:\u003c\/strong\u003e 8mm\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"5408\" data-end=\"5541\"\u003e\r\n\u003cp data-start=\"5410\" data-end=\"5541\"\u003e\u003cstrong data-start=\"5410\" data-end=\"5423\"\u003eFeatures:\u003c\/strong\u003e Quick-Change Ball-Bearing Spring Guide, Reinforced Stress Points, Pre-Radiused Cylinder Windows, Deep Wire Channels\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"5542\" data-end=\"5605\"\u003e\r\n\u003cp data-start=\"5544\" data-end=\"5605\"\u003e\u003cstrong data-start=\"5544\" data-end=\"5556\"\u003eTesting:\u003c\/strong\u003e Withstands M160 Spring Pressure Without Damage\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"5606\" data-end=\"5646\"\u003e\r\n\u003cp data-start=\"5608\" data-end=\"5646\"\u003e\u003cstrong data-start=\"5608\" data-end=\"5619\"\u003eFinish:\u003c\/strong\u003e Durable Anodized Coating\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-start=\"5648\" data-end=\"5651\"\u003e\r\n\r\n\u003ch3 data-start=\"5653\" data-end=\"5682\"\u003e\u003cstrong data-start=\"5657\" data-end=\"5680\"\u003eAbout Retro Arms CZ\u003c\/strong\u003e\u003c\/h3\u003e\r\n\u003cp data-start=\"5684\" data-end=\"6062\"\u003e\u003cstrong data-start=\"5684\" data-end=\"5701\"\u003eRetro Arms CZ\u003c\/strong\u003e is an industry leader in precision Airsoft engineering, renowned for creating some of the most durable and reliable CNC-machined components in the world. Based in the Czech Republic, Retro Arms specializes in \u003cstrong data-start=\"5911\" data-end=\"5940\"\u003eaerospace-grade materials\u003c\/strong\u003e and \u003cstrong data-start=\"5945\" data-end=\"5982\"\u003ecutting-edge machining techniques\u003c\/strong\u003e to deliver internals that exceed traditional Airsoft manufacturing standards.\u003c\/p\u003e\r\n\u003cp data-start=\"6064\" data-end=\"6246\"\u003eEvery Retro Arms component is designed with the serious Airsoft enthusiast in mind — those who demand \u003cstrong data-start=\"6166\" data-end=\"6227\"\u003elongevity, consistency, and flawless mechanical precision\u003c\/strong\u003e from their gear.\u003c\/p\u003e","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47468103794918,"sku":null,"price":205.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/a59cfc10-ra-20829-removebg-preview.png?v=1774002142"},{"product_id":"retro-arms-pre-built-complete-gearbox-color-red-edition-1","title":"Retro Arms Pre-Built Complete Gearbox (Color: Red Edition)","description":"\u003ch1 data-start=\"199\" data-end=\"254\"\u003eRetro Arms Pre-Built Complete Gearbox – Red Edition\u003c\/h1\u003e\r\n\u003cp data-start=\"256\" data-end=\"744\"\u003eWhen it comes to upgrading your airsoft rifle, nothing defines performance and reliability more than the heart of your build: the gearbox. The \u003cstrong data-start=\"399\" data-end=\"454\"\u003eRetro Arms Pre-Built Complete Gearbox (Red Edition)\u003c\/strong\u003e is engineered to deliver unmatched precision, durability, and consistency for serious airsoft players. Designed and manufactured by \u003cstrong data-start=\"587\" data-end=\"604\"\u003eRetro Arms CZ\u003c\/strong\u003e, this gearbox combines CNC-machined aluminum craftsmanship with premium internals, making it a powerhouse upgrade for your M4 or M16 AEG.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"746\" data-end=\"749\"\u003e\r\n\r\n\u003ch2 data-start=\"751\" data-end=\"789\"\u003ePremium CNC Aluminum Construction\u003c\/h2\u003e\r\n\u003cp data-start=\"790\" data-end=\"1261\"\u003eThis gearbox shell is precision-machined from a solid block of \u003cstrong data-start=\"853\" data-end=\"888\"\u003eEN AW 7075 T651 billet aluminum\u003c\/strong\u003e, one of the strongest alloys available in airsoft manufacturing. It’s not just tough—it’s built to withstand the stresses of high-performance parts and demanding field conditions. The durable anodized red finish doesn’t just look aggressive; it also adds an extra layer of protection against wear, ensuring your gearbox keeps its integrity even during extended gameplay.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"1263\" data-end=\"1266\"\u003e\r\n\r\n\u003ch2 data-start=\"1268\" data-end=\"1304\"\u003eReinforced for High Performance\u003c\/h2\u003e\r\n\u003cp data-start=\"1305\" data-end=\"1769\"\u003eThe \u003cstrong data-start=\"1309\" data-end=\"1332\"\u003eRed Edition gearbox\u003c\/strong\u003e features reinforcement at all critical stress points, ensuring long-term durability when running powerful springs and high-speed motors. The \u003cstrong data-start=\"1474\" data-end=\"1507\"\u003epre-radiused cylinder windows\u003c\/strong\u003e evenly distribute impact forces across the shell, significantly reducing the chances of stress cracks that often occur with standard gearboxes. This level of engineering is what sets Retro Arms apart as one of the most respected manufacturers in the industry.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"1771\" data-end=\"1774\"\u003e\r\n\r\n\u003ch2 data-start=\"1776\" data-end=\"1817\"\u003eOptimized Design for Advanced Builds\u003c\/h2\u003e\r\n\u003cp data-start=\"1818\" data-end=\"2271\"\u003eThe gearbox includes \u003cstrong data-start=\"1839\" data-end=\"1863\"\u003edeeper wire channels\u003c\/strong\u003e along the base, giving you a cleaner and more secure wiring setup—essential for high-demand electronic systems. Its \u003cstrong data-start=\"1980\" data-end=\"2016\"\u003equick-change spring guide system\u003c\/strong\u003e allows you to swap springs without completely disassembling your gearbox, saving valuable time during tuning or field adjustments. This makes it a favorite choice among airsoft technicians and competitive players who demand flexibility and reliability.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"2273\" data-end=\"2276\"\u003e\r\n\r\n\u003ch2 data-start=\"2278\" data-end=\"2318\"\u003eFully Loaded with Premium Internals\u003c\/h2\u003e\r\n\u003cp data-start=\"2319\" data-end=\"2522\"\u003eUnlike most shells that require you to build from scratch, the Retro Arms Pre-Built Gearbox comes ready with high-performance internals, hand-assembled and tested for reliability. The package includes:\u003c\/p\u003e\r\n\r\n\u003cul data-start=\"2524\" data-end=\"3201\"\u003e\r\n \t\u003cli data-start=\"2524\" data-end=\"2555\"\u003e\r\n\u003cp data-start=\"2526\" data-end=\"2555\"\u003e\u003cstrong data-start=\"2526\" data-end=\"2547\"\u003eRA CNC gearbox V2\u003c\/strong\u003e shell\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"2556\" data-end=\"2626\"\u003e\r\n\u003cp data-start=\"2558\" data-end=\"2626\"\u003e\u003cstrong data-start=\"2558\" data-end=\"2594\"\u003eRA PandoRA gearset 20:1 SS (3mm)\u003c\/strong\u003e for smooth, efficient cycling\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"2627\" data-end=\"2704\"\u003e\r\n\u003cp data-start=\"2629\" data-end=\"2704\"\u003e\u003cstrong data-start=\"2629\" data-end=\"2653\"\u003eRA 8mm ball bearings\u003c\/strong\u003e for reduced friction and improved gear stability\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"2705\" data-end=\"2750\"\u003e\r\n\u003cp data-start=\"2707\" data-end=\"2750\"\u003e\u003cstrong data-start=\"2707\" data-end=\"2724\"\u003eRA INOX shims\u003c\/strong\u003e for precision alignment\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"2751\" data-end=\"2802\"\u003e\r\n\u003cp data-start=\"2753\" data-end=\"2802\"\u003e\u003cstrong data-start=\"2753\" data-end=\"2800\"\u003eRA type C cylinder \u0026amp; standard cylinder head\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"2803\" data-end=\"2880\"\u003e\r\n\u003cp data-start=\"2805\" data-end=\"2880\"\u003e\u003cstrong data-start=\"2805\" data-end=\"2851\"\u003eRA piston (14.5 teeth) with A1 piston head\u003c\/strong\u003e for consistent compression\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"2881\" data-end=\"2942\"\u003e\r\n\u003cp data-start=\"2883\" data-end=\"2942\"\u003e\u003cstrong data-start=\"2883\" data-end=\"2920\"\u003eRA tappet plate with delayer chip\u003c\/strong\u003e for perfect feeding\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"2943\" data-end=\"2979\"\u003e\r\n\u003cp data-start=\"2945\" data-end=\"2979\"\u003e\u003cstrong data-start=\"2945\" data-end=\"2966\"\u003eRA nozzle and ARL\u003c\/strong\u003e components\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"2980\" data-end=\"3024\"\u003e\r\n\u003cp data-start=\"2982\" data-end=\"3024\"\u003e\u003cstrong data-start=\"2982\" data-end=\"3022\"\u003eRA selector plate and Type J trigger\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"3025\" data-end=\"3098\"\u003e\r\n\u003cp data-start=\"3027\" data-end=\"3098\"\u003e\u003cstrong data-start=\"3027\" data-end=\"3059\"\u003eJefftron Leviathan V2 MOSFET\u003c\/strong\u003e for advanced electronic fire control\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"3099\" data-end=\"3138\"\u003e\r\n\u003cp data-start=\"3101\" data-end=\"3138\"\u003e\u003cstrong data-start=\"3101\" data-end=\"3116\"\u003eM140 spring\u003c\/strong\u003e for high FPS builds\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n \t\u003cli data-start=\"3139\" data-end=\"3201\"\u003e\r\n\u003cp data-start=\"3141\" data-end=\"3201\"\u003e\u003cstrong data-start=\"3141\" data-end=\"3161\"\u003eDean T connector\u003c\/strong\u003e for efficient electrical conductivity\u003c\/p\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp data-start=\"3203\" data-end=\"3405\"\u003eThis setup is purpose-built to deliver around \u003cstrong data-start=\"3249\" data-end=\"3273\"\u003e490 FPS \/ 1.2 Joules\u003c\/strong\u003e, depending on your configuration. Every gearbox is \u003cstrong data-start=\"3325\" data-end=\"3368\"\u003ebuilt and tested in-house by Retro Arms\u003c\/strong\u003e to ensure performance consistency.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"3407\" data-end=\"3410\"\u003e\r\n\r\n\u003ch2 data-start=\"3412\" data-end=\"3459\"\u003eProfessional Performance, Ready to Drop In\u003c\/h2\u003e\r\n\u003cp data-start=\"3460\" data-end=\"3822\"\u003eThe Retro Arms Pre-Built Gearbox (Red Edition) is designed for compatibility with \u003cstrong data-start=\"3542\" data-end=\"3602\"\u003eTokyo Marui, G\u0026amp;P, Matrix, and other M4\/M16 AEG platforms\u003c\/strong\u003e (modification may be required depending on model). With its advanced build and premium parts, this gearbox provides a reliable, high-performance foundation for serious players who want a competitive edge on the field.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"3824\" data-end=\"3827\"\u003e\r\n\r\n\u003ch2 data-start=\"3829\" data-end=\"3856\"\u003eWhy Choose Retro Arms?\u003c\/h2\u003e\r\n\u003cp data-start=\"3857\" data-end=\"4190\"\u003eSince its founding, \u003cstrong data-start=\"3877\" data-end=\"3894\"\u003eRetro Arms CZ\u003c\/strong\u003e has earned a global reputation for producing some of the most advanced, precision-engineered airsoft components on the market. Known for pushing the limits of performance, Retro Arms products are trusted by competitive players, technicians, and enthusiasts who refuse to compromise on quality.\u003c\/p\u003e\r\n\r\n\r\n\u003chr data-start=\"4192\" data-end=\"4195\"\u003e\r\n\r\n\u003ch2 data-start=\"4197\" data-end=\"4216\"\u003eFinal Thoughts\u003c\/h2\u003e\r\n\u003cp data-start=\"4217\" data-end=\"4774\"\u003eIf you’re looking to take your AEG to the next level, the \u003cstrong data-start=\"4275\" data-end=\"4330\"\u003eRetro Arms Pre-Built Complete Gearbox (Red Edition)\u003c\/strong\u003e is more than just an upgrade—it’s a complete performance solution. From the \u003cstrong data-start=\"4407\" data-end=\"4438\"\u003eCNC-machined aluminum shell\u003c\/strong\u003e to the \u003cstrong data-start=\"4446\" data-end=\"4478\"\u003eJefftron Leviathan V2 MOSFET\u003c\/strong\u003e and carefully selected internal parts, this gearbox is battle-tested and ready to dominate. Whether you’re a competitive player, a tech enthusiast, or simply want the best for your build, the Red Edition gearbox delivers reliability, durability, and precision that will last for years to come.\u003c\/p\u003e","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47468108349670,"sku":null,"price":665.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/de139351-ra-116338-removebg-preview.png?v=1774002146"},{"product_id":"retro-arms-cnc-19-steel-teeth-polymer-piston-body","title":"Retro Arms CNC 19 Steel Teeth Polymer Piston Body","description":"\u003ch2\u003eRetro Arms CNC 19 Steel Teeth Polymer Piston Body – High-Strength AEG Upgrade\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms CNC 19 Steel Teeth Polymer Piston Body is a high-performance internal upgrade designed for airsoft technicians and players who demand reliability, strength, and long-term durability from their AEG gearbox setup. Built with a reinforced polymer body and a CNC-machined steel tooth rack, this piston is engineered to handle high-stress builds, high-rate-of-fire setups, and heavy spring loads without compromise.\u003c\/p\u003e\n\u003cp\u003eWhether you are replacing a worn piston or building a high-end custom AEG, this component delivers professional-grade performance where it matters most—the heart of your gearbox.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReinforced Polymer Body with Advanced Composite Engineering\u003c\/h2\u003e\n\u003cp\u003eAt the core of this piston is a next-generation injection-molded polymer body, engineered for strength and resilience under repeated cycling.\u003c\/p\u003e\n\u003cp\u003eKey construction features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eInjection-molded polymer chassis for lightweight durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCarbon fiber and molybdenum infusion for added structural reinforcement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh impact resistance under high-speed gearbox cycling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced friction and improved longevity under stress\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis advanced material blend ensures the piston remains light enough for speed builds while still strong enough for demanding high-power configurations.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCNC Steel Tooth Rack for Maximum Gear Engagement\u003c\/h2\u003e\n\u003cp\u003eThe defining feature of this piston is its precision-machined steel tooth rack, designed for extreme durability and consistent gear engagement.\u003c\/p\u003e\n\u003cp\u003ePerformance benefits include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCNC-milled 19-tooth steel rack for maximum strength\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHeat-treated steel construction for wear resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConsistent gear meshing under high torque loads\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced risk of stripping in high-stress builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes the piston ideal for upgraded motors, high-torque gearsets, and reinforced gearbox setups.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOptimized Angle of Engagement (AOE) Design\u003c\/h2\u003e\n\u003cp\u003eTo extend gearbox life and improve mechanical efficiency, the final tooth has been shaved to improve angle of engagement (AOE).\u003c\/p\u003e\n\u003cp\u003eThis provides:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eReduced stress on pickup teeth\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved gear alignment during cycling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLower risk of premature piston or gear wear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSmoother compression and firing cycle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis feature is especially important in high-speed or high-energy builds where gearbox timing is critical.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWide Compatibility Across AEG Gearboxes\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms CNC 19 Steel Teeth Polymer Piston Body is engineered for universal compatibility across most standard AEG platforms.\u003c\/p\u003e\n\u003cp\u003eCompatible with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eVersion 2 gearboxes (M4 \/ AR-15 platforms)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVersion 3 gearboxes (AK \/ G36 \/ SMG platforms)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMost aftermarket gearsets and internal upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-speed and high-torque builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis versatility makes it a go-to piston for both beginners upgrading reliability and advanced builders pushing performance limits.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBuilt for High-Performance AEG Builds\u003c\/h2\u003e\n\u003cp\u003eThis piston is designed to perform under pressure, making it suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh FPS DMR builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-speed CQB setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMilsim and endurance gameplay\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHeavy spring and reinforced gearbox builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts hybrid construction ensures it maintains structural integrity even under extreme stress conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Takeaways\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCNC-machined 19-tooth steel rack for maximum durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCarbon fiber and molybdenum-infused polymer body\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHeat-treated steel teeth for long-term wear resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOptimized angle of engagement reduces gearbox stress\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with most V2 and V3 AEG gearboxes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal for both upgrade and high-performance builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose the Retro Arms CNC Piston?\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms CNC 19 Steel Teeth Polymer Piston Body offers a rare combination of lightweight performance and industrial-grade durability. With reinforced materials, precision CNC steel teeth, and AOE optimization, it is built for players who demand reliability under pressure and consistent performance over time.\u003c\/p\u003e\n\u003cp\u003eFor any serious AEG build, this piston is not just an upgrade—it is a foundation for long-term gearbox reliability.\u003c\/p\u003e","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47655469908198,"sku":"93244","price":37.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/retroarms-93244.jpg?v=1778633109"},{"product_id":"retro-arms-gearbox-spring-progressive-winding-sr25-aeg-m140","title":"Retro Arms Gearbox Spring w\/ Progressive Winding for Airsoft SR25 AEG Rifles (Model: M140)","description":"\u003ch2\u003eRetro Arms M140 Progressive Gearbox Spring for SR25 AEG – High-Durability Performance Upgrade\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms Gearbox Spring M140 is a premium-grade upgrade component engineered for high-performance SR25 platform AEG builds. Designed with progressive winding technology and ultra-durable silicone-chrome steel construction, this spring delivers consistent power output while significantly reducing gearbox stress, making it ideal for DMR setups, long-range builds, and high-end airsoft tuning.\u003c\/p\u003e\n\u003cp\u003eBuilt for reliability under sustained use, the M140 spring balances performance and longevity—ensuring stable FPS output without sacrificing gearbox durability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProgressive Winding Design for Optimized Performance\u003c\/h2\u003e\n\u003cp\u003eUnlike standard linear springs, the M140 uses a progressive winding structure that adjusts resistance throughout compression. This results in smoother energy transfer and reduced mechanical shock inside the gearbox.\u003c\/p\u003e\n\u003cp\u003eKey advantages include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eProgressive coil spacing for variable tension control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSmoother compression cycle for reduced gearbox strain\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMore efficient energy delivery per shot\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved long-term consistency in FPS output\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis design helps prevent sudden stress spikes that commonly damage gears, pistons, and cylinder assemblies in high-power SR25 builds.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eUltra-Durable Silicone Chrome Steel Construction\u003c\/h2\u003e\n\u003cp\u003eThe spring is manufactured using high-grade silicone chrome steel, a material known for its exceptional strength and elasticity retention under repeated compression cycles.\u003c\/p\u003e\n\u003cp\u003eMaterial benefits:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh tensile strength for long-term durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResistance to compression fatigue over time\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintains consistent output through thousands of cycles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced deformation compared to standard steel springs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis ensures that your gearbox maintains reliable performance even under demanding field conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReduced Gearbox Stress and Increased Longevity\u003c\/h2\u003e\n\u003cp\u003eOne of the key engineering goals of the Retro Arms Gearbox Spring M140 is to minimize unnecessary stress on internal gearbox components.\u003c\/p\u003e\n\u003cp\u003ePerformance benefits include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLower resting compression force reduces static stress on gears\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLess wear on piston teeth and cylinder head\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced strain on motor and battery system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved gearbox lifespan in high-FPS builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes it an ideal choice for players who want high output without sacrificing long-term reliability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eDesigned for SR25 DMR Platforms\u003c\/h2\u003e\n\u003cp\u003eThe M140 rating is specifically tuned for SR25-style AEG rifles, commonly used in designated marksman rifle (DMR) roles where accuracy and consistent power output are critical.\u003c\/p\u003e\n\u003cp\u003eIdeal applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSR25 DMR builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLong-range outdoor engagement setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSemi-automatic precision rifles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-quality upgraded gearbox configurations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is optimized for players who need stable velocity and repeatable performance across extended engagements.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBuilt for High-Round Reliability\u003c\/h2\u003e\n\u003cp\u003eThis spring is engineered to withstand thousands of firing cycles without significant loss of compression strength.\u003c\/p\u003e\n\u003cp\u003eDurability highlights:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMaintains spring tension over extended use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResistant to fatigue and permanent deformation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReliable FPS stability across long gameplay sessions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal for competitive and milsim environments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you're running high-volume skirmishes or precision-focused gameplay, the M140 delivers consistent performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Takeaways\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eProgressive winding design reduces gearbox stress\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSilicone chrome steel construction for maximum durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for SR25 DMR and high-FPS AEG builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintains consistent FPS over long-term use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduces wear on piston, gears, and motor system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEngineered for thousands of cycles without deformation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose the Retro Arms M140 Spring?\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms Gearbox Spring M140 delivers a rare balance of power, precision, and durability. Its progressive design reduces internal stress while maintaining strong, consistent FPS output—making it one of the most reliable upgrade springs for serious SR25 AEG builders.\u003c\/p\u003e\n\u003cp\u003eFor players who demand long-range performance without sacrificing gearbox life, this spring is a professional-grade solution built to last.\u003c\/p\u003e","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47655516635366,"sku":"124374","price":27.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/retroarms-124371.jpg?v=1778633535"},{"product_id":"retro-arms-cz-cnc-low-profile-gearbox-bushings-8mm","title":"Retro Arms CZ CNC Low Profile Gearbox Bushings (Size: 8mm)","description":"\u003ch2\u003eRetro Arms CZ CNC Low Profile Gearbox Bushings (8mm) – High-Precision AEG Reinforcement Upgrade\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms CZ CNC Low Profile Gearbox Bushings 8mm are precision-engineered reinforcement components designed to significantly improve gearbox stability, efficiency, and long-term durability in high-performance airsoft AEG builds. Manufactured from hardened 90MnCrV7 steel and CNC-turned for exact tolerances, these low-profile bushings are built to handle extreme stress from upgraded springs and high-torque gear systems.\u003c\/p\u003e\n\u003cp\u003eIdeal for both competitive players and advanced tech builds, these bushings reduce friction, improve gear alignment, and extend gearbox lifespan under heavy use.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCNC-Machined Steel Construction for Maximum Strength\u003c\/h2\u003e\n\u003cp\u003eAt the core of these bushings is ultra-precise CNC machining using high-grade hardened steel, ensuring consistent performance under extreme mechanical stress.\u003c\/p\u003e\n\u003cp\u003eKey material advantages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCNC-turned 90MnCrV7 high-grade steel construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHardened to 58–60 HRC for exceptional wear resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLayered stress-relief treatment for improved durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for long-term use in high-FPS AEG builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes them ideal for setups running strong springs, high-speed gearsets, or upgraded motors where standard bushings would fail prematurely.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eLow Profile 2mm Design for Improved Gearbox Fitment\u003c\/h2\u003e\n\u003cp\u003eThe low-profile 2mm height design is engineered to optimize internal gearbox spacing and reduce unnecessary friction between moving parts.\u003c\/p\u003e\n\u003cp\u003ePerformance benefits include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCompact 2mm profile for precise gearbox alignment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced gear wobble and improved axis stability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBetter load distribution across gearbox shell\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnhanced compatibility with tight-tolerance builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis design ensures gears remain properly seated, improving efficiency and reducing wear during sustained firing cycles.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReduced Friction and Improved Gear Efficiency\u003c\/h2\u003e\n\u003cp\u003eOne of the key advantages of the Retro Arms CZ CNC Low Profile Gearbox Bushings 8mm is its ability to reduce rotational friction within the gearbox system.\u003c\/p\u003e\n\u003cp\u003eKey performance improvements:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSmoother gear rotation under load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced heat buildup during extended use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLower energy loss for improved efficiency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnhanced motor response and battery performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBy minimizing resistance, these bushings help your AEG run more smoothly and consistently, especially in high-speed configurations.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBuilt for High-Stress AEG Builds\u003c\/h2\u003e\n\u003cp\u003eThese bushings are specifically designed for demanding airsoft setups that push internal components to their limits.\u003c\/p\u003e\n\u003cp\u003eIdeal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh FPS DMR builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-speed CQB AEGs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReinforced gearbox systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompetitive and milsim loadouts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTheir hardened steel construction ensures reliability even under sustained stress from powerful springs and upgraded gearsets.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation and Maintenance Notes\u003c\/h2\u003e\n\u003cp\u003eProper installation ensures maximum performance and lifespan:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eApply light lubrication (Vaseline or gearbox grease) to gear axles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure correct alignment during gearbox assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with most standard 8mm gearbox shells\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSuitable for professional-grade AEG tuning and upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCorrect maintenance reduces wear and ensures smooth, long-term operation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Takeaways\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCNC-machined 90MnCrV7 steel construction for maximum durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHardened to 58–60 HRC for extreme wear resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow-profile 2mm design improves gearbox stability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduces friction for smoother gear rotation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal for high-FPS and high-stress AEG builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose Retro Arms CZ CNC Bushings?\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms CZ CNC Low Profile Gearbox Bushings 8mm deliver unmatched strength, precision, and reliability for serious airsoft technicians and players. With hardened steel construction, CNC accuracy, and a low-friction design, these bushings are built to withstand the demands of high-performance AEG systems.\u003c\/p\u003e\n\u003cp\u003eIf you’re upgrading for durability and efficiency, this is a foundational internal component that ensures your gearbox runs smoother, longer, and stronger under pressure.\u003c\/p\u003e","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47655573815526,"sku":"90792","price":29.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/retro-90792.jpg?v=1778635083"},{"product_id":"retro-arms-gearbox-spring-sr25-m130-progressive-winding-airsoft-aeg","title":"Retro Arms Gearbox Spring w\/ Progressive Winding for Airsoft SR25 AEG Rifles (Model: M130)","description":"\u003ch2\u003eRetro Arms M130 Progressive Gearbox Spring for SR25 AEG – Balanced Power \u0026amp; Long-Life Performance\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms Gearbox Spring M130 SR25 is a high-performance upgrade spring designed specifically for SR25-style AEG platforms that demand consistent output, long-term durability, and reduced gearbox stress. Built from ultra-durable silicone chrome steel with progressive winding technology, this spring delivers stable FPS performance while extending the lifespan of internal gearbox components.\u003c\/p\u003e\n\u003cp\u003eIdeal for designated marksman rifle (DMR) builds, this M130 spring strikes a balance between power and reliability, making it a go-to choice for precision-focused airsoft setups.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProgressive Winding Technology for Smooth Compression\u003c\/h2\u003e\n\u003cp\u003eUnlike standard linear springs, the M130 features a progressive winding design that adjusts resistance throughout compression. This improves efficiency and reduces mechanical shock inside the gearbox.\u003c\/p\u003e\n\u003cp\u003eKey advantages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eProgressive coil spacing for variable resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSmoother compression cycle with reduced gearbox stress\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMore controlled energy transfer per shot\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved consistency in semi-automatic DMR builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis design minimizes sudden load spikes that typically wear out gears, pistons, and cylinder assemblies over time.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSilicone Chrome Steel Construction for Maximum Durability\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms Gearbox Spring M130 SR25 is manufactured using high-grade silicone chrome steel, engineered for strength, elasticity, and long-term compression stability.\u003c\/p\u003e\n\u003cp\u003eMaterial benefits include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh tensile strength for sustained performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResistance to fatigue and deformation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStable FPS output over extended use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLong service life under repeated cycling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis ensures dependable performance even in high-use field conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReduced Gearbox Stress for Extended Lifespan\u003c\/h2\u003e\n\u003cp\u003eOne of the most important advantages of this progressive spring is its ability to reduce strain on internal gearbox components.\u003c\/p\u003e\n\u003cp\u003ePerformance benefits:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLower resting compression force reduces static stress\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced wear on piston teeth and gears\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLess strain on motor and battery system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproved gearbox longevity in high-stress builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBy minimizing internal resistance, the spring helps maintain long-term reliability in upgraded SR25 platforms.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOptimized for SR25 DMR Platforms\u003c\/h2\u003e\n\u003cp\u003eThe M130 rating is specifically tuned for SR25-style designated marksman rifles, making it ideal for precision-based airsoft gameplay.\u003c\/p\u003e\n\u003cp\u003eBest suited for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSR25 DMR builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSemi-automatic long-range platforms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOutdoor field engagements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBalanced FPS and consistency setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt provides a strong yet controlled power output suitable for most field regulations while maintaining accuracy and stability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBuilt for Consistency and Long-Term Performance\u003c\/h2\u003e\n\u003cp\u003eThe M130 spring is engineered to maintain stable performance across thousands of firing cycles without significant loss in compression strength.\u003c\/p\u003e\n\u003cp\u003eDurability highlights:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eConsistent FPS output over time\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResistant to permanent deformation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReliable performance under frequent use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for high-round-count gameplay\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes it ideal for competitive players and milsim operators who require dependable performance across extended sessions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Takeaways\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eProgressive winding design reduces gearbox stress\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSilicone chrome steel construction for durability and stability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eM130 rating optimized for SR25 DMR platforms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproves gearbox longevity and reduces wear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintains consistent FPS over long-term use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal for semi-auto precision and field builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose the Retro Arms M130 Progressive Spring?\u003c\/h2\u003e\n\u003cp\u003eThe Retro Arms Gearbox Spring M130 SR25 delivers the ideal balance of performance and durability for SR25 AEG platforms. With progressive winding technology, high-strength silicone chrome steel construction, and reduced gearbox stress, it ensures long-term reliability without sacrificing power.\u003c\/p\u003e\n\u003cp\u003eFor players who want consistent DMR performance and extended gearbox life, this spring is a professional-grade upgrade built for serious field use.\u003c\/p\u003e","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47655609172198,"sku":"124373","price":27.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/retroarms-124373.jpg?v=1778636943"}],"url":"https:\/\/ngrwzj-i1.myshopify.com\/collections\/retro-arms.oembed","provider":"CQC Airsoft ","version":"1.0","type":"link"}