Smith & Wesson 642 Airweight Features Smith & Wesson J-Frame revolver is designed to fire a full power round and is as simple and easy to use as it is reliable. The Model 642 Airweight is a variation of the Model 42 Centennial Airweight which integrates the time-tested features of the original with modern advancements. It is a small-frame concealed-hammer revolver for concealed carry. This Smith & Wesson 642 Airweight model has an aluminum alloy frame stainless steel barrel and cylinder integral front and fixed rear sights and black Crimson Trace Lasergrip. It has no internal lock. Smith & Wesson 642 Airweight Specifications Brand: Smith & Wesson Model: Model 642 Airweight Category: Revolvers Caliber: 38 S&W Spl +P Capacity: 5rd Action: DAO Frame Finish: Stainless OAL: 6.30 Frame Material: Aluminum Sights: Integral Front / Fixed Rear Barrel Finish: Stainless Frame Size: Small (J-Frame) Grips: Black Polymer Cylinder Material: Stainless Steel Cylinder Finish: Stainless Includes: Crimson Trace Lasergrip Barrel Length: 1.88 Weight: 15.40 oz Frame Description: Matte Silver Aluminum Hammer Style: Concealed