20 mm M61 cannon
The 20 mm M61 is an American rotary cannon used in their jet aircraft. Renowned for its high rate of fire, the M61 became the standard gun armament for American jet aircraft for many years since its adoption. The M61A1 is an improvement over the original M61 with a new linkless feeding mechanism that reduced malfunctions due to the extreme rate of fire. It would be designated as the JM61 in Japanese service, and a version powered by its own exhaust gases rather than an aircraft-mounted hydraulic motor, typically used as an external gun pod, was designated the GAU-4. A ground vehicle-mounted version was designed M168, while lighter versions with lower rate of fire for helicopters were designated M195 (six-barrelled) and M197 (three-barrelled).
| Name | Main role | Rank | |
|---|---|---|---|
 Phantom FGR.2 | Fighter |  | VII |
 Phantom FG.1 | Fighter | | VII |
 F-4J(UK) Phantom II | Fighter | | VII |
 ␗F-104A | Fighter |  | VI |
 ␗F-104G | Fighter | | VII |
 ␗F-16A MLU | Fighter | | VIII |
 ␗AH-1W | Attack helicopter | | VI |
 ▄F-104G | Fighter |  | VII |
 ▄F-16A | Fighter | | VIII |
 ▄F-16AM | Fighter | | VIII |
 ◄F-104G | Fighter |  | VII |
 ◄F-4F | Fighter | | VII |
 ◄F-4F KWS LV | Fighter | | VIII |
 ◄F-4F Early | Fighter | | VII |
 Hovet | SPAA |  | V |
 Machbet | SPAA | | VI |
 Kfir C.7 | Fighter | | VII |
 Netz | Fighter | | VIII |
 Kurnass | Fighter | | VII |
 Kurnass 2000 | Fighter | | VIII |
 Baz | Fighter | | VIII |
 Baz Meshupar | Fighter | | VIII |
 Nesher | Fighter | | VII |
 F-16D Barak II | Fighter | | VIII |
 Kfir Canard | Fighter | | VII |
 Kfir C.2 | Fighter | | VII |
 Tzefa A | Attack helicopter | | V |
 Tzefa D/E | Attack helicopter | | VI |
 ▄F-104G | Fighter |  | VI |
 F-104S | Fighter | | VII |
 F-104S.ASA | Fighter | | VII |
 ▄F-16A ADF | Fighter | | VIII |
 AMX | Strike aircraft | | VII |
 ▄F-104S TAF | Fighter | | VII |
 A129CBT | Attack helicopter | | VII |
 AH-129D | Attack helicopter | | VII |
 T129 | Attack helicopter | | VI |
 F-104J | Fighter |  | VI |
 F-4EJ Phantom II | Fighter | | VII |
 F-4EJ Kai Phantom II | Fighter | | VIII |
 F-15J | Fighter | | VIII |
 F-15J(M) | Fighter | | VIII |
 T-2 | Fighter | | VI |
 F-1 | Fighter | | VI |
 F-16AJ | Fighter | | VIII |
 T-2 Early | Fighter | | VI |
 F-4EJ ADTW | Fighter | | VII |
 PG 02 | Heavy boat | | IV |
 ▅AH-1E | Attack helicopter | | VI |
 AH-1S | Attack helicopter | | VI |
 AH-1S Kisarazu | Attack helicopter | | VI |
 M163 | SPAA |  | V |
 F-104A | Fighter | | VI |
 F-104C | Fighter | | VI |
 F-16A | Fighter | | VIII |
 F-16A ADF | Fighter | | VIII |
 F-16C | Fighter | | VIII |
 F-4C Phantom II | Fighter | | VII |
 F-4E Phantom II | Fighter | | VII |
 F-15A | Fighter | | VIII |
 F-15C MSIP II | Fighter | | VIII |
 F-14A Early | Fighter | | VIII |
 F-14B | Fighter | | VIII |
 A-7D | Strike aircraft | | VII |
 A-7E | Strike aircraft | | VII |
 F-105D | Strike aircraft | | VII |
 F-111A | Strike aircraft | | VII |
 A-10A | Strike aircraft | | VI |
 A-7K | Strike aircraft | | VII |
 AH-1G | Attack helicopter | | V |
 AH-1F | Attack helicopter | | VI |
 AH-1W | Attack helicopter | | VI |
 AH-1Z | Attack helicopter | | VII |
 ▄F-14A IRIAF | Fighter | | VIII |
 F-111C | Strike aircraft | | VII |
 F-16C Barak II | Fighter | | VIII |
 F-111F | Strike aircraft | | VII |
 F-15I Ra’am | Strike aircraft | | VIII |
 F-15E | Strike aircraft | | VIII |
 ◡Kfir C.10 | Fighter | | VIII |
 ▄A-7E | Strike aircraft | | VII |
 ▄F-16A OCU | Fighter | | VIII |
 Netz (Mod) | Fighter | | VIII |
 ▄F-18C | Fighter |  | VIII |
 F/A-18A | Fighter | | VIII |
 F/A-18C Late | Fighter | | VIII |
 F/A-18C Early | Fighter | | VIII |
