The Colt Diamondback .38 Spl is a usa-made da/sa revolver chambered in .38 Special, introduced in 1966. Primary use: Carry, Home Defense. Type: Revolver Action: DA/SA Caliber: .38 Special Capacity: 6 Year introduced: 1966, USA Weight: 21 oz Overall length: 6.5" Status: Discontinued Intended use: Carry, Home Defense