Lead & Steel AR-15 5.56mm Threaded AR Barrel 18in SPR Rifle Length 1-8 Twist 1/2x28 Nitride Black

Lead & Steel AR-15 5.56mm Threaded AR Barrel 18in SPR Rifle Length 1-8 Twist 1/2x28 Nitride Black. 56mm barrel dimpled is fully stress-relieved and 11 target crowned with a gas nitride finish. The barrels are ported conservatively. Paired with a heavy buffer you may experience stoppages with underpowered steel-cased ammo. To guarantee reliability with all ammo types use a standard carbine buffer + spring and run the system with a magazine of full power M193/M855 if new before shooting steel. Aft