− | ''This is an anti-aircraft autocannon introduced by the British Vickers Ltd. company.<br>Also known as the "pom-pom" gun due to its firing sound and its two-round burst, it was licensed but also produced domestically. It was gradually replaced by more modern anti-aircraft guns. | + | ''This is an anti-aircraft autocannon introduced by the British Vickers company.<br>Also known as the pom-pom gun due to its firing sound for its two-round burst, it was produced under license in Japan. It was gradually replaced by more modern domestically produced anti-aircraft machine guns. |