Upper all DPMS Parts Upper A 3 flat top Forged A3 flattop allows use of detachable handle 7075-T6 Aircraft Aluminum Alloy Hard Coat Anodized per Mil Spec and Teflon Coated Black Dust Cover Forward Assist Collapsible stock DPMS 16" barrel Aluminum Gas Block with picatinny rail 416 Stainless Steel Barrel 1-9 Twist Lower Plumb Crazy Firearms Light weight carbon fiber $600.00 New never fired I am an FFL