A volley gun is a gun with multiple single-shot barrels that volley fired simultaneously or sequentially in quick succession. Although capable of unleashing intense firepower, volley guns differ from modern machine guns in that they lack autoloading and automatic fire mechanisms, and therefore their volume of fire is limited by the number of barrels bundled together.
The mitrailleuse, a 19th-century volley gun
Ottoman Empire volley gun with 9 barrels, early 16th century, Army Museum (Paris)
Duckfoot pistol made during the reign of George III.
Three-barrel tap-action pocket pistol capable of firing all barrels simultaneously or sequentially using a rotating block in the pan.
A machine gun (MG) is a fully automatic, rifled auto-loading firearm designed for sustained direct fire with rifle cartridges. Other automatic firearms such as automatic shotguns and automatic rifles are typically designed more for firing short bursts rather than continuous firepower and are not considered true machine guns. Submachine guns fire handgun cartridges rather than rifle cartridges, therefore they are not considered machine guns, while automatic firearms of 20 mm (0.79 in) caliber or more are classified as autocannons rather than machine guns.
Top: IWI Negev Bottom: FN MAG (general purpose machine gun)
Czechoslovak 7.62 mm Universal Machine gun Model 1959
A .50 caliber M2 machine gun: John Browning's design has been one of the longest-serving and most successful machine gun designs
A vehicle with a Sumitomo M2 heavy machine gun mounted at the rear
