The 4-inch Model 66 became one of the most widely issued police revolvers of the 1970s and 1980s. The combination of stainless steel, adjustable sights, and .357 Magnum capability in the medium K-Frame made it the definitive American police revolver of its era. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 6 Year introduced: 1970, USA Weight: 36 oz Overall length: 9.5" Status: Active Intended use: Duty, Carry, Sport