Dan Wesson revolvers feature a unique interchangeable barrel system that allows the shooter to swap barrel and shroud assemblies using a hex wrench included with the revolver. Every major component is user-interchangeable. The 357 Mag 4-inch is the most common configuration. Type: Revolver Action: Double-Action Caliber: 357 Mag Capacity: 6 Year introduced: 1968, USA Weight: 40 oz Overall length: 9.5" Status: Active Intended use: Hunting