Auto Ordnance 1911, Semi-automatic, Metal Frame Pistol, Full Size, 45ACP, 5 Barrel, Steel, Matte Finish, Black, Plastic Grips, 7 Rounds, 1 Magazine, GI Specs 1911BKO The Auto-Ordnance 1911BKO frame incorporates GI specs, and features a matte black finished frame, barrel, and slide. The carbon steel slide, sear, and disconnector are machined from solid bar stock, then heat treated properly to assure durability and long life over many thousands of rounds.