{"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","url":"https:\/\/ngrwzj-i1.myshopify.com\/products\/retro-arms-cz-billet-cnc-8mm-ver-2-gearbox-shell-for-vfc-quick-change-spring-series-airsoft-aeg-rifles-1","provider":"CQC Airsoft ","version":"1.0","type":"link"}