Type Revolver Place of origin United States Service history In service 1898–1946 Wars Spanish–American WarBoxer RebellionSecond Boer WarWorld War IWorld War IIKorean WarVietnam War Production history Manufacturer Colt’s Patent Firearms Manufacturing Co. Produced 1898–1946 No. built 356,000+ Specifications Cartridge .38-40, .44 Russian, .44 Special, … Continue reading Colt New Service