The Heavy Barrel variant of the Model 10 added a full-lug bull barrel that reduced muzzle flip and improved pointability. It became a preferred option for officers who wanted better control under rapid fire. Type: Revolver Action: Double-Action Caliber: .38 Special Capacity: 6 Year introduced: 1957, USA Weight: 34 oz Overall length: 9.25" Status: Active Intended use: Duty, Service