SN: C-3914. Modern production, Semi-auto rifle chambered in 5.56 Nato with a 14.5″ barrel Pinned and welded to 16″. Overall condition is great with some handling wear. Has a Franklin Armory binary trigger installed. Magpul Asap swivel, Magpul CTR stock, BCM Gunfighter charging handle and muzzle break. Comes with one magazine.