A revolver is a repeating firearm that consists of multiple chambers in a revolving cylinder and at least one barrel for firing. As the user cocks the hammer, the cylinder revolves to align the next round with the barrel, which gives its name. In modern sense, a revolver refers to a handgun weapon that has a revolving cylinder and chambers about 5-6 rounds. However, other weapons may also have the design of a revolver, with notable examples of various grenade launchers and riot guns.History