CNC alluminium QD gearbox shell for M249

Description Are you looking for the most durable gearbox that can withstand a very strong spring? So we have a solution for you. This unique gearbox is not a classic casting but machined on precision CNC machines. It is made of 7075 aluminum, making it much stronger than the classic metal alloy. The gearbox is designed for M249 airsoft machine guns.