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An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber (20 mm/0.79 in or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles fired by a machine gun.
Autocannons are automatic guns with calibers of 20 millimeters (0.79 in) to 60 millimeters (2.4 in). There are many types, including chain guns, gast guns, revolver cannons, and rotary cannons.
The M242 Bushmaster chain gun is a 25 mm (25×137mm) single-barrel chain-driven autocannon.It is used extensively by the U.S. military, such as in the Bradley fighting vehicle, as well as by other NATO members and some other nations in ground combat vehicles and various watercraft.
The Bofors 40 mm Automatic Gun L/60 (often referred to simply as the "Bofors 40 mm gun", the "Bofors gun" and the like, [3] [4] see name) is an anti-aircraft autocannon, designed in the 1930s by the Swedish arms manufacturer AB Bofors. The gun was designed as an intermediate anti-aircraft gun, filling the gap between fast firing close-range ...
The OTO Melara 76 mm gun, marketed as the OTO 76/62 Gun Mount, is a naval autocannon built and designed by the Italian defence company OTO Melara. It is based on the OTO Melara 76/62C and evolved toward 76/62 SR and 76/62 Strales. [3] The system is compact enough to be installed on relatively small warships.
The GAU-8/A Avenger autocannon, mounted in an A-10 Thunderbolt II. Most nations use these rapid-fire cannons on their light vehicles, replacing a more powerful, but heavier, tank gun. A typical autocannon is the 25 mm "Bushmaster" chain gun, mounted on the LAV-25 and M2 Bradley armored vehicles. [172]
English cannon were used defensively in 1346 during the siege of Breteuil to launch fire onto an advancing ... A typical autocannon is the 25 mm "Bushmaster" chain ...
A revolver cannon is a type of autocannon, commonly used as an aircraft gun. It uses a cylinder with multiple chambers, similar to those of a revolver handgun, to speed up the loading-firing-ejection cycle. Some examples are also power-driven, to further speed the loading process.