Autocannons are automatic guns with calibers of 20 millimeters to 57 millimeters. There are many types, including chain guns, gast guns, revolver cannons, and rotary cannons. They are used as military aircraft main guns, naval guns, anti-aircraft weapons, infantry fighting vehicle main guns and are occasionally found on reconnaissance vehicles like the LAV-25.
General autocannons Caliber (mm) Power source Weapon name Country of origin Period 20 API Blowback Becker Type M2 20 mm cannon World War I 20 Short Recoil or Gas Nkm wz.38 FK Interwar 20 API Blowback Polsten World War II 20 Gas Berezin B-20 World War II 20 Gas ShVAK cannon World War II 20 Short Recoil Ho-1 cannon World War II 20 Short Recoil Ho-3 cannon World War II 20 Short Recoil Ho-5 cannon World War II 20 API Blowback Type 99 cannon World War II 20 Recoil Automatkanon m/40 World War II 20 Recoil Automatkanon m/45 World War II 20 Recoil Automatkanon m/49 Cold War 20 Gas Delayed Blowback Hispano-Suiza HS.404 World War II 20 Gas Delayed Blowback M621 cannon Cold War 20 API Blowback Oerlikon S World War II 20 API Blowback Oerlikon FF World War II 20 Gas and Blowback Oerlikon KAE Modern 20 API Blowback MG FF cannon World War II 20 Short Recoil MG 151/20 World War II 20 Gas, Blowback, Recoil Rheinmetall MK 20 Rh 202 Cold War 20 Gas and Blowback Colt Mk 12 cannonWilliams, pp. 327–328 Cold War 23 Gas Afanasev Makarov AM-23 Cold War 23 Gast Gun, Gas Gryazev-Shipunov GSh-23 Cold War 23 Short Recoil Nudelman-Rikhter NR-23 Cold War 23 Short Recoil Nudelman-Suranov NS-23 World War II 25 Recoil 72-K World War II 25 Recoil Automatkanon M/32 World War II 25 Gas Hotchkiss 25 mm cannon World War II 25 Gas Type 96 cannon World War II 25 Chain Gun, Electric M242 Bushmaster Cold War 25 Gas Oerlikon KBA Cold War 28 Recoil 1.1" autocannon World War II 30 Gas and Recoil 30 mm Shipunov 2A42 Cold War 30 Long Recoil 30 mm Shipunov 2A72 Cold War 30 Short Recoil Gryazev-Shipunov GSh-30-1 Cold War 30 Gast Gun, Gas Gryazev-Shipunov GSh-30-2 Cold War 30 Short Recoil Ho-155 cannon World War II 30 API Blowback Type 2 cannon World War II 30 Gas Delayed Blowback Type 5 cannon World War II 30 Short Recoil MK 101 cannon World War II 30 Gas and Recoil MK 103 cannon World War II 30 API Blowback MK 108 cannon World War II 30 Short Recoil Nudelman-Rikhter NR-30 Cold War 30 Long Recoil RARDEN Cold War 30 Chain Gun, Electric M230 Chain Gun Cold War 30 Chain Gun, Electric Mk44 Bushmaster II Cold War 35 Gas Oerlikon KDA Cold War 35 Chain Gun, Electric Bushmaster III Cold War 37 Short Recoil BK 37 World War II 37 Long Recoil COW 37 mm gun World War II 37 Long Recoil Ho-203 cannon World War II 37 Short Recoil Ho-204 cannon World War II 37 Long Recoil M4 cannon World War II 37 Short Recoil Nudelman N-37 Cold War 37 Short Recoil Nudelman-Suranov NS-37 World War II 37 Internal QF 1-pounder pom-pom World War I 40 Internal Bofors 40 mm gun L/60 World War II 40 Internal Bofors 40 mm gun L/70 Cold War 40 Internal Ho-301 cannon World War II 40 Internal QF 2-pounder pom-pom World War I 40 Internal Vickers S gun World War II 40 Internal Otobreda Fast Forty Cold War 40 External Bushmaster IV Cold War 40 Internal 40CT cannon Modern 45 Internal Nudelman-Suranov NS-45 World War II 50 Internal Rheinmetall BK-5 World War II 57 Internal Ho-401 cannon World War II 57 Internal AZP S-60 Cold War 57 Internal ZIF-31 Cold War 57 Internal Automatkanon m/47 Cold War 57 Internal 57 mm Bofors L/60 Cold War 57 Internal 57 mm Bofors L/70 Cold War
Revolver cannons Caliber (mm) Power source Weapon name Country of origin Period 20 Internal M39 cannon Cold War 20 Internal Mauser MG 213 World War II 23 Internal Rikhter R-23 Cold War 27 Internal Mauser BK-27 Cold War 30 External Rheinmetall RMK30 Modern 30 Internal ADEN cannon Cold War 30 Internal DEFA cannon Cold War 30 External GIAT 30 Cold War 30 Internal Oerlikon KCA Cold War 30 Internal NN-30 Cold War 35 Internal Oerlikon Millennium 35 mm Naval Revolver Gun System Modern 42 External Red King Cold War
Rotary cannons Caliber (mm) Power source Weapon name Country of origin Period 20 External M61 Vulcan Cold War 20 External M197 electric cannon Cold War 23 Internal Gryazev-Shipunov GSh-6-23 Cold War 25 External GAU-12 Equalizer Cold War 30 External GAU-8 Avenger Cold War 30 External GAU-13 Cold War 30 Internal Gryazev-Shipunov GSh-6-30 Cold War 37 External T250 Cold War 37 External Hotchkiss 1-pounder Rotary Cannon 19th century 47 External Hotchkiss 3-pounder Rotary Cannon 19th century
See also Gatling gun
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