The original Colt Single Action Army with 4.75-inch barrel, the most common cavalry barrel length. These first-generation revolvers were produced from 1873 through 1941 and are among the most historically significant handguns ever made. Type: Revolver Action: Single-Action Caliber: .45 Colt Capacity: 6 Year introduced: 1873, USA Weight: 37 oz Overall length: 10.25" Status: Discontinued Military use: Yes Intended use: Cowboy Action Shooting