Really Not an M16 at All: Colt's M231 Port Firing Weapon
The Colt M231 Port Firing Weapon, a specialized variant of the AR-15 platform, was designed for the M2 Bradley Fighting Vehicle. It operates from an open bolt at a high rate of fire (1100-1200 RPM) and features significant modifications from a standard M16, including a unique recoil system and simplified fire control. Lacking traditional sights and a stock, it was intended for use within the vehicle, firing through dedicated ports.




