EXAMINE THIS REPORT ON COLT M4 MAGPUL

Because of the brief barrel, the vehicle-15 SMGs suffered from a loud and bright muzzle blast, and many muzzle devices were being created to reduce this. The SMGs were being to begin with equipped with the common M16 rifle's "duckbill" or three-prong flash hiders, which didn't ease the condition. In September 1966, Colt made a 3.5-inch (89 mm) ver