The Smith & Wesson Safety Hammerless models were produced from 1887 to World War II. The Type D is a self-loading pistol that operates like a "hammerless" double-action revolver. Pocket Hammerless, Savage Model 1907, Star Bonifacio Echeverria and Ruby pistols were widely used. The Model 1908 Vest Pocket is a compact, hammerless, striker-fired, semi-automatic single-action pistol. IZh-54 is a side by side hammerless smoothbore shotgun. Hammerless or hammer shotguns with varying amounts of engraving were available. Daniel Myron LeFever is credited with the invention of the American hammerless shotgun. American inventor Daniel Myron LeFever was the first to develop a "hammerless" shotgun, in 1878. He went on to patent the first truly automatic hammerless shotgun in 1883. It was designed to be used in the Savage Model 99 hammerless lever action rifle. He is best known as the inventor of the hammerless shotgun, first introduced in 1878. The origins of the hammerless shotgun are European but otherwise obscure. Today, the Pocket Hammerless is manufactured by U.S. Armament, and is licensed by Colt. Hammerless firearms do not use a firing pin. Despite the title "hammerless", the Model 1903 does have a hammer.