A REVIEW OF XM177E2

Due to the quick barrel, the vehicle-fifteen SMGs experienced from a loud and bright muzzle blast, and a number of muzzle units have been developed to lessen this. The SMGs have been at first fitted Together with the normal M16 rifle's "duckbill" or a few-prong flash hiders, which didn't reduce the problem. In September 1966, Colt produced a three.