The Model 642 Performance Center version receives a tuned action, ported barrel, and enhanced sights from the S&W Performance Center. The porting tames muzzle rise in the ultralight alloy frame revolver. Type: Revolver Action: DAO Caliber: .38 Spl +P Capacity: 5 Year introduced: 2005, USA Weight: 15 oz Overall length: 6.3" Status: Active Intended use: Carry, Backup