The Colt Peacemaker Stein. It looks like the movie star Sam Elliot as the Sheriff. Excellent Condition. The Colt Single Action Army is a single-action revolver handgun. It was designed in 1872 for the U.S. government service revolver trials of 1872 by Colt's Patent Firearms Manufacturing Company and was adopted as the standard-issued pistol of the US Army in 1873 until 1892.