After the Civil War, Remington revolutionized firearm ammunition with a cartridge conversion of its Model 1858 Army in 1869. The metallic cartridge-loading revolver was soon bested by Smith & Wesson’s new topbreak model in 1872 and Colt’s Peacemaker in 1873. Two years later E. Remington & Sons came blazing back with the new Model 1875; it was to become one of the most famous guns of the Old West.