The Masterkey is simply a Colt M4 with a modified Remington Model 870P shotgun underneath. It’s mounted and operated in the same fashion as the M203 grenade launcher. It fires 12 gauge 70mm shells, and has a capacity for seven shells. Its effective range is limited to about 10 meters when fired as a shotgun. Rather than being an offensive weapon, this is usually used to breach doors rapidly, earning its name as the master key to any door. Usually used by Special Forces.

Log in or register to write something here or to contact authors.