Upper-16" 416 Fluted Stainless Steel, 5.56 NATO 1-9 Twist, Quad Rail Picatinny, Gas Block w/Gas Tube, A3 Flat Top Receiver w/Ejection Port Cover and Forward Assist. Aluminum parts are Black Hardcoat Anodized, Steel Parts are Mag Phosphate Coated. American Tactical Omni Poly Lower Nikon ProStaff 3x9x40 w/NikoPlex Reticle, Quick Eye Focus. Everything is new, Test fired only. $850.00 to your FFL.