No-internal-lock version of the 642, an aluminum-frame J-frame Airweight with matte stainless cylinder and no-lock frame preferred by purists. Type: Revolver Action: Double-Action Caliber: .38 Spl +P Capacity: 5 Year introduced: 2006, USA Weight: 15 oz Overall length: 6.3" Status: Active Intended use: Concealed carry, Deep concealment