RUMORED BUZZ ON XM177E2

Due to the brief barrel, the vehicle-15 SMGs experienced from a loud and bright muzzle blast, and quite a few muzzle gadgets had been created to cut back this. The SMGs have been originally equipped with the standard M16 rifle's "duckbill" or 3-prong flash hiders, which didn't relieve the issue. In September 1966, Colt created a three.five-inch (89