SIGM400 Enhanced Patrol 5.56mm NATO 16 Inch Barrel Flip-Up Sights MOE Forend/Grip and Collapsible Stock Black Finish 30 Round

Direct impingement operating system with rotating locking bolt. True AR platform tactical rifle with a sixteen inch Nitride treated barrel, 1 in 7 inch twist, and a 7075-T6 aircraft grade aluminum forged lower receiver. Ambi QD sling mounts. Low-profile gas block with an M1913 rail and front Magpul flip-up sight. Magpul MOE forend, grip and collapsible stock.