NOT KNOWN FACTUAL STATEMENTS ABOUT COLT M4 MAGPUL

Due to limited barrel, the vehicle-15 SMGs endured from the loud and bright muzzle blast, and several muzzle equipment were being designed to cut back this. The SMGs have been to begin with fitted Using the common M16 rifle's "duckbill" or 3-prong flash hiders, which did not ease the problem. In September 1966, Colt made a three.five-inch (89 mm)