3 cm MK 303 Flak
The 3 cm MK 303 Flak and twin-mounted 3 cm MK 303 Flakzwilling (M44) were experimental 30 mm anti-aircraft guns developed in Nazi Germany. They fired the powerful 30x210mm round and only 222 were produced. The gun was to be installed on Type XXI submarines as AA defense and its use as AA defense replacing 2 cm Flak and 3.7 cm Flak weapons was also considered.
3 cm MK 303 Flak
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- Name
- 3 cm MK 303 (Br)
- Field
- anti-aircraft gun
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Documentary summary
The 3 cm MK 303 Flak and twin-mounted 3 cm MK 303 Flakzwilling (M44) were experimental 30 mm anti-aircraft guns developed in Nazi Germany. They fired the powerful 30x210mm round and only 222 were produced. The gun was to be installed on Type XXI submarines as AA defense and its use as AA defense replacing 2 cm Flak and 3.7 cm Flak weapons was also considered.
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wikidata · Q104602252 · wikipedia · 3 cm MK 303 Flak
In this article
Overview
Overview
The use of the 3 cm M.K. 303 Flakzwilling on the Flakpanzer IV "Kugelblitz" was considered, but rejected. The development began in late 1941 and production started in late 1944.
Key facts
Key facts
• Name — 3 cm MK 303 (Br) • Origin — Nazi Germany • Type — Anti-aircraft cannon • Is Ranged — yes • Is Artillery — yes • Service — unknown • Used By — Nazi Germany • Wars — World War II • Manufacturer — Krieghoff • Production Date — 1944–1945 • Number — 222 (32 in 1944 and 190 in 1945) • Variants — 3 cm Flakzwilling MK 303 (Br) • Weight — 185 kg (408 lbs) • Length — 3.145 m • Part Length — 2.2 m L/73 • Cartridge — 30×210mm • Caliber — 30 mm (1.18 in) • Rate — 400 rpm (cyclic) • Velocity — 1100 m/s (3,609 ft/s) M-Schos 900 m/s (2,953 ft/s) HE 950 m/s (3,117 ft/s) AP/HE • Feed — 15 cartridge clip • Elevation — -10°to ±85° • Traverse — 360°
Post-war use
Post-war use
• Illustration — Postwar PLDvK vz. 53 of Czechoslovak army In the 50s, the MK 303 was produced in Czechoslovakia under the designation M53, with the clip feed replaced by a 10-round box magazine. It was also used as the armament of the SPAAG M53/59 Praga.
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Pawlas S. 38
- 2.Pawlas S. 39
- 3.Pawlas S. 47
- 4.Deutsche U-Boote 1935 bis 1945: Geschütze. www.ww2technik.de.
- 5.Авиапушки Кригхоффа. MG 301, MK 303, auf alternathistory.com
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 17 August 2026.
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