MK 103 (30 mm)

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The MK 103 (30 mm) was manufactured by German weapon manufactureer Rheinmetall-Borsig. During World War II, this German 30 mm autocannon was mounted in several German combat aircraft and was designed for two purposes, anti-tank and air-to-air combat. The 103 was developed from the older MK 101, however the MK 103 was faster firing, had a faster muzzle velocity and was belt fed allowing for potentially larger ammunition loads than drum fed weapons.

In comparison to the MK 101, while the MK 103 could fire faster, however, it was made from lesser grades of steel and lighter components. The current HE ammunition was too powerful for the new cannon in this state, so a new 30 mm HE round was created which had a reduced propellent load, causing the new round to have a loss of about 100 m/s compared to the standard 30 mm round. Later in the war, the 30 mm cannon was mounted to the Kugelblitz and used as a flak autocannon.

Vehicles equipped with this weapon

Vehicles equipped with this weapon
Fighters  Fw 190 F-8 (Suspended) · Ta 152 C-3
Twin-engine fighters  Do 335 A-0 · Do 335 A-1 · Do 335 B-2 · He 219 A-7 · Me 410 B-6/R3
Jet fighters  Ho 229 V3
Attackers  Hs 129 B-2 (Suspended) · Hs 129 B-2 (Romania) (Suspended) · Hs 129 B-2 (Romania) (Suspended)
SPAA  Kugelblitz

General info

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Available shells

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Comparison with analogues

The Ho 229's MK103 has a different anti-tank belt composition and reduced accuracy compared to the anti-tank belts on other planes Note: Gunpods containing MK 103 (30 mm) have reduced accuracy compared to those mounted conventionally

Usage in battles

Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against the main opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.

Pros and cons


  • High muzzle velocity and good accuracy
  • HVAP-T shells can destroy medium tanks with ease and even heavy tanks with precise aiming
  • Minegeschoss shells are devastating against aircraft
  • Surprisingly light recoil impulse for it's power


  • Sluggish Rate of fire
  • Stealth belt consistent solely of API is utterly useless compared to Armored/Air targets
  • Limited ammo in most installations
  • Limited to 1 or 2 cannons in most aircraft.
  • Heavy. Expect planes with this installed to have a sluggish performance.


Examine the history of the creation and combat usage of this weapon. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article.


An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.

See also

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  • reference to the article about the variant of the cannon/machine gun;
  • references to approximate analogues by other nations and research trees.

External links

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  • topic on the official game forum;
  • encyclopedia page on the weapon;
  • other literature.

Germany aircraft cannons
15 mm  MG 151
20 mm  MG 151 · MG C/30L · MG FF · MG FF/M
30 mm  MK 101 · MK 103 · MK 108
37 mm  BK 3.7
50 mm  BK 5 · Mk.214a
75 mm  BK 7.5
20 mm  Hispano Mk.V (Britain) · M24A1 (USA) · M61A1 (USA) · ShVAK (USSR)
23 mm  GSh-23-2 (USSR) · GSh-23L (USSR) · NR-23 (USSR) · VYa-23 (USSR)
30 mm  DEFA 552 (France) · GSh-30-2K (USSR) · NR-30 (USSR)
37 mm  N-37D (USSR)

Italy aircraft cannons
20 mm  Hispano Mk.II (Britain) · Hispano Mk.V (Britain) · M24A1 (USA) · M61 (USA) · MG 151 (Germany)
30 mm  DEFA 552 (France) · MK 103 (Germany) · MK 108 (Germany)
37 mm  BK 3.7 (Germany) · Breda Model 39 37/45
102 mm  102/35 mod 14