The Model 10 Heavy Barrel variant replaced the earlier round-butt tapered barrel configuration with a square-butt, heavy bull-profile barrel. The heavier barrel reduced muzzle rise and became the standard for law enforcement procurement through the 1960s–1980s. Type: Revolver Action: Double-Action Caliber: 38 Special Capacity: 6 Year introduced: 1957, USA Weight: 33.5 oz Overall length: 9" Status: Discontinued Intended use: Service / Law Enforcement