YHM Billet Model 57 Carbine 5.56mm 16 Inch Threaded Barrel 1:9 Twist QDS Sights MOE Grip Magpul Adjustable Stock 30 Round

Direct impingement carbine length gas system features billet lower receiver of 7075-T6 aircraft grade aluminum with oversized magwell; SLR Slant Series handguard made of 6061-T6 aircraft grade aluminum, freefloating with continuous top picatinny rail. Quick Deploy Sight System, hooded. Two-stage, five-pound trigger. Sixteen inch threaded barrel, fluted to enhance barrel cooling. E-Z Pull takedown pins. Magpul commercial 6-position adjustable stock. Slant compensator/muzzle brake to reduce muzzle rise and recoil.Flattop A3 upper receiver made of 7075-T6 aircraft grade aluminum. Tactical charging handle; Magpul MOE pistol grip; two 30-round Gen2 black PMags. 1:9 inch twist rate.