8MM CNC REINFORCED GEARBOX FOR M249 / PKM RETROARMS ELECTRIC RIFLE (RTAR-6390)

New model machined from solid of the highest quality and durability with threaded mounting screws
ideal for super powerful springs or intensive use with super gusts
unlike other printed models, it is produced with milling and retified and polished finish with CNC machines
thanks to the particular washing it combines incredible strength with negligible weight (50% less than the printed model)
compatible with A&K models ideal for M249 / PKM machine guns