CMMG MK4 HT AR-15 Salt Bath Nitride 5.56 16″ Heavy Weight Taper Threaded Barrel 1/2-28 TPI RKM11 KeyMod Hand Guard, 30rd Mag

MK4 HT features CMMG’s RKM11 KeyMod free float hand guard. Sixteen inch heavy weight taper threaded barrel (1/2-28 TPI) with thread protector. A2 pistol grip and M4 butt stock with six position mil-spec receiver extension. Forged 7075-T6 AL M4 type upper, AR-15 type lower. Single stage mil-spec style trigger. Weight 7 pounds (unloaded). Length: 31 inches (stock collapsed).