RetroArms CNC Gearbox V3 AK (8mm) - QSC

CNC V2 upper gearbox part designed for V3 AK (8mm) airsoft replicas.

This gearbox is manufactured from a solid block of aircraft aluminum (Dural) EN AW 7075 T651, which has higher strength (590 MPa) than common construction steel (390 MPa). Due to the material used, our gearboxes have better durability and strength than common zinc and aluminum gearboxes. We manufacture these gearboxes on our precision CNC milling machines in our factory.


Installation of internal parts and gearbox requires professional knowledge, experience and skills. There are many airsoft manufacturers on the market and each of them creates their own sizes, there are no standards like ISO engineering in airsoft. This is the main problem with many interior and exterior parts from different manufacturers that may be the same product, but with different dimensions. We recommend only using parts from manufacturers with Tokyo Marui compatible parts, where there should not be a compatibility issue with our CNC gearbox.