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Oerlikon Autocannon (20mm)

A British gunner seen here looks down the sight of an Oerlikon AA gun

The Oerlikon AA gun was an anti aircraft weapon that was used by the Allies during World War II. It required a crew of only one man to operate and was fed by a 60 round magazine.

Description

Chambered for the 20 x 110RB round, the Oerlikon weighed 67 kg, measured 216 cm in length with a 140 cm long barrel, and utilized the Advanced Primer Ignition (API) blowback method of operation, giving a rate of fire of 450 rounds per minute.[1]

Associated weapons

The Oerlikon served as the basis for the Hispano-Suiza HS.404, which led to the British Hispano Autocannon and the US American Armament Co. AN-M2C, and the Japanese Type 99

References

  1. Williams, Anthony G. Rapid Fire - The Development of Automatic Cannon, Heavy Machine Guns and their Ammunition for Armies, Navies and Air Forces. Airlife Publishing. 2000. ISBN 1-84037-122-6 Page 244


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