The Model 37 Chief's Special Airweight uses an aluminum alloy frame to reduce weight to approximately 13.5 oz, making it one of the lightest .38 Special revolvers available. It retains the exposed hammer of the Model 36 in a lighter package. Type: Revolver Action: Double-Action Caliber: 38 Special Capacity: 5 Year introduced: 1952, USA Weight: 13.5 oz Overall length: 6.3" Status: Discontinued Intended use: Concealed Carry / Backup