Type 2 20 mm AA Machine Cannon
The Type 2 20 mm AA machine cannon was a Japanese-designed anti-aircraft gun. It entered service in 1942.
Type 2 20 mm AA Machine Cannon

Imperial Japanese Army · Sayama Jiroː"Light Anti-Aircraft Artillery and Fortress Artillery of the Japanese Army", Kojinsha, Tokyo 2012, ISBN 978-4-7698-2729-0, p. 87 · Public domain
- Name
- Type 2 20 mm AA machine cannon
- Field
- anti-aircraft gun
- Region
- Empire of Japan
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Documentary summary
The Type 2 20 mm AA machine cannon was a Japanese-designed anti-aircraft gun. It entered service in 1942.
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wikidata · Q7860691 · wikipedia · Type 2 20 mm AA machine cannon
In this article
Key facts
Key facts
• Name — Type 2 20 mm AA machine cannon • Origin — Empire of Japan • Type — Autocannon • Is Ranged — yes • Is Artillery — yes • Service — 1942–1945 • Used By — Imperial Japanese Army • Wars — World War II • Production Date — 1942–1945 • Number — 16 • Variants — 20 mm Twin AA machine cannon • Weight — 550 kg • Part Length — 1.4 m L/70 • Cartridge — 20 x 142 mm • Caliber — 20 mm • Barrels — 1 • Action — Gas operated • Rate — 420 to 480 rounds/min (maximum) • Velocity — 950 m/s • Max Range — 5,500 m (horizontal) 3,500 m (altitude) • Feed — 20 round box • Elevation — -15° to +95° • Traverse — 360°
Design
Design
Introduced in 1942, compared to the earlier Type 98 20 mm AA machine cannon, Type 2 20 mm had higher maximum rate of fire, could be elevated to 95 degrees and had a central fire-control system. The central fire-control system developed for the Type 2 could control and direct six of the guns at once. The gun was based on the German 2 cm Flak 30/38/Flakvierling. It was driven by electric motors, obtaining its power from a generator trailer. The Type 2 number was designated for the year the gun was accepted, 2602 in the Japanese imperial year calendar, or 1942 in the Gregorian calendar.
Variant
Variant
• Illustration — Type 2 20 mm twin AA machine cannon Two of the guns mounted together formed a variant known as the Type 2 20 mm twin AA machine cannon. The prototype Type 98 20 mm AAG tank was equipped with this twin Type 2 variant as its main armament. The Type 98 20 mm AAG tank did not enter production.
Identity
Identity
Type 2 20 mm AA Machine Cannon is classified as an anti-aircraft gun. Associated with Empire of Japan.
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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 16 August 2026.
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