The Colt Single Action Army with 7.5-inch Cavalry barrel, the original configuration specified by the U.S. Army contract. This long-barrel variant dominated military service through the Plains Wars era. Type: Revolver Action: Single-Action Caliber: .45 Colt Capacity: 6 Year introduced: 1873, USA Weight: 38 oz Overall length: 13" Status: Discontinued Military use: Yes Intended use: Military Service