The Volcanic Repeating Arms Company was a U.S. company formed in 1855 by partners Horace Smith and Daniel B. Wesson to develop Walter Hunt's Rocket Ball ammunition and lever action mechanism. Volcanic made an improved version of the Rocket Ball ammunition, and a carbine and pistol version of the lever action gun to fire it. While the Volcanic Repeating Arms Company was short lived, its descendants, Smith & Wesson and Winchester Repeating Arms Company, became major firearms manufacturers.