The Model 642 is the stainless/aluminum Airweight J-frame — the most popular revolver in the S&W lineup. The alloy frame with stainless cylinder and barrel provide a rust-resistant package at modest weight. The hammerless design ensures a clean draw from pocket or holster. The Model 642 has been the best-selling revolver in the United States for multiple years and is the definitive American pocket revolver. Type: Revolver Action: Double-Action Caliber: .38 Special +P Capacity: 5 Year introduced: 1990, USA Weight: 15 oz Overall length: 6.3" Status: Active Intended use: concealed_carry, self_defense, backup, law_enforcement