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 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 model has an aluminum alloy frame stainless steel barrel and cylinder integral front and fixed rear sights and black Crimson Trace Lasergrip.