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  2. Oerlikon 20 mm cannon - Wikipedia

    en.wikipedia.org/wiki/Oerlikon_20_mm_cannon

    However, it was the original SS gun which was widely adopted as anti-aircraft gun, being especially widely used by Allied navies during World War II. This gun used a 400-grain (26-gram) charge of IMR 4831 smokeless powder to propel a 2,000-grain (130-gram) projectile at 2,800 feet (850 meters) per second.

  3. 2 cm Flak 30, Flak 38 and Flakvierling 38 - Wikipedia

    en.wikipedia.org/wiki/2_cm_Flak_30,_Flak_38_and...

    20 mm Polsten - Equivalent British 20mm anti-aircraft gun, developed from a Polish design which was, in turn, derived from a version of the Swiss Oerlikon. The blueprints were brought to Britain by its creators after the invasion of Poland. Breda Model 35 - Equivalent Italian 20mm anti-aircraft gun.

  4. M163 VADS - Wikipedia

    en.wikipedia.org/wiki/M163_VADS

    The M163 Vulcan Air Defense System (VADS), officially Gun, Air Defense Artillery, Self-Propelled 20-mm, M163, is a self-propelled anti-aircraft gun (SPAAG) that was primarily used by the United States Army. The M163 provides mobile, short-range air defense protection for ground units against low-flying fixed-wing aircraft and helicopters.

  5. List of anti-aircraft guns - Wikipedia

    en.wikipedia.org/wiki/List_of_anti-aircraft_guns

    20 mm AA machine cannon carrier truck Japan: World War II 20 1 20 mm anti-aircraft tank Ta-Se Japan: World War II 20 2 Type 98 20 mm AAG tank Japan: World War II 20 2 Centaur AA Mk I and Mk II United Kingdom: World War II 20 3 BOV APC Yugoslavia: Cold War: 20 2 Crusader III 20mm anti-aircraft tank Mk II United Kingdom: World War II 20 4 Wirbelwind

  6. Hispano-Suiza HS.404 - Wikipedia

    en.wikipedia.org/wiki/Hispano-Suiza_HS.404

    This made it an ideal anti-aircraft weapon for mounting on light vehicles, as well as a fighter aircraft gun, supplementing or replacing the 7.62 mm (.30 calibre) and .303 inch (7.7 mm) machine guns commonly used in military aircraft of the 1930s. The HS.404 was produced by the French subsidiary of Hispano-Suiza, and under license by a variety ...

  7. Breda 20/65 mod.35 - Wikipedia

    en.wikipedia.org/wiki/Breda_20/65_mod.35

    A surviving 20/65 Breda. The Breda 20/65 mod.35 ("Breda 20 mm L/65 model 1935"), [2] [3] also simply known as 20 mm Breda [4] or Breda Model 35, [5] among other variations, [3] was an Italian 20 mm (0.787 in) anti-aircraft gun produced by the Società Italiana Ernesto Breda of Brescia company during the 1930s and early 1940s.

  8. 20 mm caliber - Wikipedia

    en.wikipedia.org/wiki/20_mm_caliber

    Lahti L-40 anti-aircraft gun Finland: Nkm wz.38 FK anti-tank vehicle-mounted gun Poland: Designated "heaviest machine gun", or "Najcięższy karabin maszynowy, Nkm", AA/AT (actually an autocannon) Type 98 20 mm AA machine cannon and Type 4 20 mm twin AA machine cannon Japan: 20×142 mm Automatkanon m/40 Sweden: 20×145 mm R Autocannon

  9. Rheinmetall Mk 20 Rh-202 - Wikipedia

    en.wikipedia.org/wiki/Rheinmetall_Mk_20_Rh-202

    Rheinmetall Zwillingsflak twin-gun anti-aircraft system began development in 1968 to meet the requirements of the low-level air defence units of the German Air Force, i.e. "to engage low and very low approaching enemy aircraft with all appropriate means in time to prevent them from firing their weapons or delivering their ordnance, or at least to prevent them from carrying out an accurate ...