THE ULTIMATE GUIDE TO COLT M4 MAGPUL

Because of the shorter barrel, the CAR-fifteen SMGs endured from a loud and bright muzzle blast, and numerous muzzle devices were produced to cut back this. The SMGs ended up initially fitted Using the normal M16 rifle's "duckbill" or a few-prong flash hiders, which didn't alleviate the condition. In September 1966, Colt produced a three.five-inch