The compact Model 66 combined the adjustable-sight Combat Magnum concept of the Model 19 with stainless steel construction. The 2.5-inch version offered plainclothes officers the best combination of .357 Magnum power, adjustable sights, and concealability. Type: Revolver Action: Double-Action Caliber: .357 Magnum Capacity: 6 Year introduced: 1970, USA Weight: 35.5 oz Overall length: 7.5" Status: Active Intended use: Carry, Duty, Plainclothes