Ar-15 Colt upper reciever with raised C and keyhole "cerro forge" markings 2001-2007. 14.5" 1/7 5.56 nato barrel with "f" marked front sight post. Includes charging handle, Magpul handguard and Detachable Carry Handle with A2 Rear Sight. Bolt carrier group not included. Unsure of round count