Ribauldequin

A ribauldequin, also known as a rabauld, randy, ribault, ribaudkin, infernal machine or organ gun, was a late medieval volley gun with many small-caliber iron barrels set up parallel on a platform, in use in medieval and early modern Europe during the Renaissance period. The name organ gun comes from the resemblance of the multiple barrels to a pipe organ.

When the gun was fired, multiple barrels discharged their projectiles at once, yielding a much higher rate of fire than single-barrel (typically larger-caliber) guns. Organ guns were lighter and more mobile than most previous artillery pieces, making them more suitable for engaging enemy personnel rather than fixed fortifications such as castles. As an early type of multiple-barrel firearm, the ribauldequin is sometimes considered the predecessor of the 19th century mitrailleuse.