A variation of the Model 42 Centennial Airweight the Smith & Wesson Model 642 is a small J-frame double-action revolver chambered in 38 Special P with a 5-round capacity. Textured rubber grips aid in a positive hold and the stainless steel construction of the barrel and cylinder ensure durability. The alloy frame is lightweight while the enclosed hammer helps to prevent snags on clothing making it an ideal choice for concealed carry. Action DAO - Caliber .38 SW Special P - Capacity 5 - Material Alloy Steel - Grip Synthetic - Finish Stainless - Sights Integral Fixed - Barrel Length 1.875" - Overall Length 6.3" - Weight 14.6 oz. - When you need a lightweight carry revolver you turn to Smith Wesson's Small Frame Airweight Series. They are the original aluminum small frame revolvers chambered in .38 SW Special P. - They are available in three distinct hammer styles - the Chiefs Special with exposed hammer the Centennial frame with fully enclosed hammer and the Bodyguard frame (.38 SW Special P only) shrouded hammer. Three styles with one idea...perfect personal protection.