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Full metal rack with 14 teeth for long-lasting durability
This lightweight yet durable upgrade is ideal for high-speed AEGs using stronger motors and gear ratios that demand reliable feeding at every cycle
Complete HPA engine kit with dual solenoid closed-bolt system
this chamber provides the stability and adjustability required for professional-level tuning
RetroArms CNC Gearbox V2 (8mm) – QSC Best Seller Full metal rack with 14The RetroArms CNC Gearbox V2 (8mm) QSC is a high precision, CNC machined aluminum gearbox shell built for AEG M4, M16, and similar Version 2 platforms. Engineered for maximum strength and performance, it features Quick Spring Change (QSC) functionality, allowing rapid tuning without full disassembly. Made in the Czech Republic, this gearbox delivers exceptional rigidity, smooth gear alignment, and long term reliability perfect for high torque, high