The Colt Model 1917 .45 ACP WWII Revolver is a usa-made double-action revolver chambered in .45 ACP, introduced in 1917. Primary use: self_defense, law_enforcement. Type: Revolver Action: Double-Action Caliber: .45 ACP Capacity: 6 Year introduced: 1917, USA Weight: 37 oz Overall length: 9.5" Status: Discontinued Military use: Yes Intended use: self_defense, law_enforcement