Volley gun
The Ribauldequin was a medieval version of the volley gun. It had its barrels set up in parallel. This early version was first employed during the Hundred Years' War by the army of Edward III of England, in 1339. Later on, the late Swiss army employed it.
Smith &amp; Wesson Model No. 2 Army
Horace Smith and Daniel B. Wesson founded the Smith & Wesson Company in Norwich, Connecticut, to develop Volcanic Firearms, in 1855 the Company was renamed Volcanic Repeating Arms and was sold to Oliver Winchester. As Samuel Colt's patent on the revolver was set to expire in 1856, Wesson began developing a prototype for a cartridge revolver with a "Bored-through" cylinder. A former employee of the Colt's Manufacturing Company named Rollin White, who held the patent for the "Bored-through" cylinder, was contacted, and Smith & Wesson proposed to pay him a royalty of $0.25 on every revolver that they made. The deal allowed Smith & Wesson to develop and produce the first cartridge revolver, the Smith & Wesson Model 1 in caliber .22 rimfire.