{"title":"Retro Arms","description":"\u003cstrong data-start=\"812\" data-end=\"826\"\u003eRetro Arms\u003c\/strong\u003e is 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.","products":[{"product_id":"retro-arms-cz-ver2-cnc-gearbox-shell-vfc","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\n\u003chr data-start=\"1187\" data-end=\"1190\"\u003e\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\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\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\n\u003chr data-start=\"1975\" data-end=\"1978\"\u003e\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\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\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\n\u003chr data-start=\"2690\" data-end=\"2693\"\u003e\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\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\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\n\u003chr data-start=\"3301\" data-end=\"3304\"\u003e\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\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\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\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\n\u003chr data-start=\"4062\" data-end=\"4065\"\u003e\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\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\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\n\u003chr data-start=\"4563\" data-end=\"4566\"\u003e\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\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\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\n\u003chr data-start=\"5184\" data-end=\"5187\"\u003e\n\u003ch3 data-start=\"5189\" data-end=\"5214\"\u003e\u003cstrong data-start=\"5193\" data-end=\"5212\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"5215\" data-end=\"5646\"\u003e\n\u003cli data-start=\"5215\" data-end=\"5250\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"5251\" data-end=\"5318\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"5319\" data-end=\"5381\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"5382\" data-end=\"5407\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"5408\" data-end=\"5541\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"5542\" data-end=\"5605\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"5606\" data-end=\"5646\"\u003e\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\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"5648\" data-end=\"5651\"\u003e\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\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\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\n","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47994900349158,"sku":"20829","price":205.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/3540_ra-20829-removebg-preview.png?v=1784175290"},{"product_id":"retro-arms-pre-built-complete-gearbox-red-edition","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\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\n\u003chr data-start=\"746\" data-end=\"749\"\u003e\n\u003ch2 data-start=\"751\" data-end=\"789\"\u003ePremium CNC Aluminum Construction\u003c\/h2\u003e\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\n\u003chr data-start=\"1263\" data-end=\"1266\"\u003e\n\u003ch2 data-start=\"1268\" data-end=\"1304\"\u003eReinforced for High Performance\u003c\/h2\u003e\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\n\u003chr data-start=\"1771\" data-end=\"1774\"\u003e\n\u003ch2 data-start=\"1776\" data-end=\"1817\"\u003eOptimized Design for Advanced Builds\u003c\/h2\u003e\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\n\u003chr data-start=\"2273\" data-end=\"2276\"\u003e\n\u003ch2 data-start=\"2278\" data-end=\"2318\"\u003eFully Loaded with Premium Internals\u003c\/h2\u003e\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\n\u003cul data-start=\"2524\" data-end=\"3201\"\u003e\n\u003cli data-start=\"2524\" data-end=\"2555\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"2556\" data-end=\"2626\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"2627\" data-end=\"2704\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"2705\" data-end=\"2750\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"2751\" data-end=\"2802\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"2803\" data-end=\"2880\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"2881\" data-end=\"2942\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"2943\" data-end=\"2979\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"2980\" data-end=\"3024\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"3025\" data-end=\"3098\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"3099\" data-end=\"3138\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"3139\" data-end=\"3201\"\u003e\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\n\u003c\/li\u003e\n\u003c\/ul\u003e\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\n\u003chr data-start=\"3407\" data-end=\"3410\"\u003e\n\u003ch2 data-start=\"3412\" data-end=\"3459\"\u003eProfessional Performance, Ready to Drop In\u003c\/h2\u003e\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\n\u003chr data-start=\"3824\" data-end=\"3827\"\u003e\n\u003ch2 data-start=\"3829\" data-end=\"3856\"\u003eWhy Choose Retro Arms?\u003c\/h2\u003e\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\n\u003chr data-start=\"4192\" data-end=\"4195\"\u003e\n\u003ch2 data-start=\"4197\" data-end=\"4216\"\u003eFinal Thoughts\u003c\/h2\u003e\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\n","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47994948845798,"sku":"116338","price":665.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/3710_ra-116338-removebg-preview.png?v=1784175331"},{"product_id":"retro-arms-cnc-rotary-hop-up-unit-m4","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\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\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\n\u003chr data-start=\"769\" data-end=\"772\"\u003e\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\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\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\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\n\u003chr data-start=\"1797\" data-end=\"1800\"\u003e\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\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\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\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\n\u003chr data-start=\"2542\" data-end=\"2545\"\u003e\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\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\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\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\n\u003chr data-start=\"3428\" data-end=\"3431\"\u003e\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\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\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\n\u003chr data-start=\"3999\" data-end=\"4002\"\u003e\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\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\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\n\u003chr data-start=\"4515\" data-end=\"4518\"\u003e\n\u003ch3 data-start=\"4520\" data-end=\"4543\"\u003e\u003cstrong data-start=\"4524\" data-end=\"4541\"\u003eKey Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"4544\" data-end=\"4996\"\u003e\n\u003cli data-start=\"4544\" data-end=\"4627\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"4628\" data-end=\"4691\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"4692\" data-end=\"4754\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"4755\" data-end=\"4814\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"4815\" data-end=\"4877\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"4878\" data-end=\"4963\"\u003e\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\n\u003c\/li\u003e\n\u003cli data-start=\"4964\" data-end=\"4996\"\u003e\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\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4998\" data-end=\"5001\"\u003e\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\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\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\n","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":47994949992678,"sku":"59004","price":65.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/files\/3236_ra-59004b-removebg-preview.png?v=1784175333"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0793\/6393\/2390\/collections\/c554_f6ea43ef445334b9315bef74c713eb41.jpg?v=1784174690","url":"https:\/\/ngrwzj-i1.myshopify.com\/collections\/retro-arms-airsoft-upgrades.oembed","provider":"CQC Airsoft ","version":"1.0","type":"link"}