The Smith & Wesson Model 22 .45 ACP Hand Ejector is a usa-made double-action revolver chambered in .45 ACP, introduced in 1950. Primary use: self_defense, law_enforcement. Type: Revolver Action: Double-Action Caliber: .45 ACP Capacity: 6 Year introduced: 1950, USA Weight: 32 oz Overall length: 9.5" Status: Discontinued Intended use: self_defense, law_enforcement