This video examines the Colt M231 Port Firing Weapon, clarifying that it is not an M16 despite some visual similarities. Developed in the 1970s for the M2 Bradley Fighting Vehicle, its primary role was close-in infantry defense. The M231 is characterized by its lack of sights and buttstock, open-bolt firing mechanism, and high rate of fire (1100-1200 rounds/minute). Early versions had rudimentary stocks, but they were discarded due to difficulty in shoulder firing. The weapon features a unique threaded fitting for its firing port and a distinct fire control system and recoil mechanism, differentiating it significantly from the M16. The description also highlights the use of M196 tracer ammunition for aiming and mentions its lineage from WW2 designs like the Krummlauf.
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