Full set:
- 1 ramp in one case
- Fuze FMP-1
| Caliber | Length Carrying Position | Weight Bearing Battle | Effective Range | Maximum Distance | Muzzle Velocity | Rate of Fire | Height Horizontal Area |
|---|---|---|---|---|---|---|---|
| 20mm | 4.3mm | 970 / 1150 kilos | 1200/2000m | 5500/4000m | 835 – 880 m/sec | 11rpm | -5° to +83° / 360° |
- Carriage clearance is 230-380 mm (depending on model). The maximum speed on asphalt road is 70 km/h.
- Stay ammunition. 20×110mm: M60 armor-piercing grenade pointer/marker, TZO M57 explosive torch cartridge and exercise grenade (M79 and M77)
- M55A2Bl: Weapon control is manual with two guardrails. The gunner aims with the optical-mechanical sight PANS-20/3 and opens fire with a pedal.
- M55A3Bl: Hydraulic directional drive of the gun powered by the small gasoline engine "Wankel" to the right of the lower seat. The shooter uses that stick to gain control.
- M55A4B: The engine is located under the gunner's seat. A new optical sight J-171 was installed. A thin roof shield is installed in front of the office area and the gunner,
- M55A4Ml: A modified A4 B 1 system upgraded with a Galileo J1 71 ballistic computer, mounted in a turret mounted on the upper roof of the BOV armored personnel carrier.
- M71/08: This version is installed on ships. The guns and ammunition box (mounted below the base of the gun), the mount and the cartridge collector are positioned to protect against water.
