CMMG Mk4 B16 5.56mm NATO 16.1in Black Semi Automatic Modern Sporting Rifle - 30+1 Rounds

CMMG Mk4 B16 Semi-Auto Rifle -When modularity, accuracy, and quality are all important, the Mk4 B16 is the rifle of choice. The Mk4 B16 features CMMG's RKM11 KeyMod free float hand guard and nitrided bull barrel to maximize shot repeatability. CMMG RKM11 KeyMod hand guard M4 butt stock with 6-pos mil-spec receiver extension A2 pistol grip Single stage mil-spec style trigger