The 4" Model 64 stainless service revolver was the primary law enforcement stainless K-Frame, offering corrosion resistance in a service-length configuration. Widely adopted by agencies in humid climates and marine environments. Type: Revolver Action: Double-Action Caliber: 38 Special +P Capacity: 6 Year introduced: 1970, USA Weight: 34.5 oz Overall length: 9" Status: Active Intended use: Service / Law Enforcement