The 4-inch Model 64 became the stainless service revolver of choice for departments that wanted the durability of stainless without paying the premium for a .357 Magnum. It served in the same role as the Model 10 but required less maintenance. Type: Revolver Action: Double-Action Caliber: .38 Special Capacity: 6 Year introduced: 1970, USA Weight: 33.5 oz Overall length: 9.25" Status: Active Intended use: Duty, Service