Description Ruger New Model Single Six Colorado Centennial with two, six-shot cylinders one chambered in .22 long rifle and one chambered in .22 magnum, and a 6.5″ barrel. Blued barrel, frame, and engraved cylinders. Stainless hammer, trigger guard, trigger, and backstrap. Smooth wood Ruger grips. Front and rear adjustable iron sights. Heel engraved with “1876 Colorado 1976”. Comes in its factor Ruger Colorado Centennial wood display case. Must ship to FFL holder. Condition: New old stock. Barrel Length: 6.5″ Serial: 76-0004 Manufacturer: RUGER Year: 1976 Caliber: .22 Long Rifle .22 Magnum Model: New Model Single Six Colorado Centennial Book# 10-318