Retro arms gearbox v2 black hi-capa magwell G&P and other compatible M4

G&P and other compatible M4 / M16 Series Airsoft AEG Magazines

000 RPM neodymium magnet high­speed motor for consistent performance

SHOOTS UP TO 430 FPS (W/ 0

4V Lipo stick battery comes in

This is great for reducing the chances of fogging up while out on the field

Retro arms gearbox v2 black hi-capa magwell G&P and other compatible M4Remade and upgraded CNC gearbox from Retro ARMS with code name "7075 series". 8mm black anodising, 9mm silver anodising. Gearbox version II is completly milled at CNC machining center. Compared to other aluminium gearboxes, our is made out of solib block of aluminium AW EN7075 T651. Source block weighs 1550g and only 143g of material are left. It is not casted like Chinese ones! Our gearbox is tested wit M160 spring without any signs off wear or