The Model 42 Centennial Airweight is the aluminum-framed version of the Model 40, weighing approximately 15 oz. Like the Model 40, it features a fully enclosed hammer and grip safety for snag-free DAO carry. Type: Revolver Action: Double-Action Only Caliber: 38 Special Capacity: 5 Year introduced: 1953, USA Weight: 15 oz Overall length: 6.3" Status: Discontinued Intended use: Concealed Carry