THE DEFINITIVE GUIDE TO BLUED COLT 1911

Due to shorter barrel, the CAR-15 SMGs experienced from the loud and bright muzzle blast, and many muzzle devices have been created to reduce this. The SMGs ended up initially fitted Together with the regular M16 rifle's "duckbill" or a few-prong flash hiders, which didn't ease the issue. In September 1966, Colt produced a three.five-inch (89 mm)