(1) 16" Barrel 1:8 Twist (USA Made) (1) 5.56 NATO Bolt Carrier Group (USA Made) (1) Slim Mlok Free Float Hand Guard 15" (USA Made) (1) Lower Parts Kit w/Trigger & Hammer-(USA Made) (1) Mil Spec 6-Position Stock (1) .750 Gas Block (1) Pistol Length Gas Tube (1) Standard Receiver End Plate (USA Made) (1) Mil-Spec/Commercial Castle Nut/Steel (USA Made) (1) Mil-Spec Buffer Tube/Alum. (USA Made) (1) 3 oz. Buffer (USA Made) (1) Buffer Tube Spring (USA Made) (1) Mil-Spec Charging Handle Alum. (1) Dust Cover (USA Made) (1) Forward Assist (USA Made) (1) A2- 5/8"x24 Thread Bird Cage A2 Muzzle Brake (USA Made) (1) A2 Pistol Grip/Black (USA Made) (1) Upper Receiver 5.56/.233/.300AAC, M4 Feed Ramps (USA Made)