The Colt Detective Special is a usa-made double-action revolver chambered in .38 Special, introduced in 1927. Primary use: self_defense, law_enforcement. Type: Revolver Action: Double-Action Caliber: .38 Special Capacity: 6 Year introduced: 1927, USA Weight: 21 oz Overall length: 6.5" Status: Discontinued Intended use: self_defense, law_enforcement