DealM4 Feed Ramp T-Marked Upper Receiver USGI 1/7 Twist Rates USGI 5.56 NATO Chambers Mil-Spec 11595E - Certified Barrel Steel (CMV) Chrome Lined Bore and Chamber Mil-Spec F-Marked Forged Front Sights USGI Government Profile Barrels from Bravo Company USA (Product BCM-URG-MID-16) |