The Type 98 20 mm AA Machine Cannon was the most common light anti-aircraft gun of the Imperial Japanese Army. About 80% of IJA light AA guns were Type 98. It entered service in 1938 and first saw combat in Nomonhan. It was used until the end of the Second World War.
The gun can be emplaced in about 3 minutes by an experienced crew or fired inaccurately from its wheels.
This weapon and its variants were based on the German/Swiss design of the Oerlikon 20 mm cannon of the 1930s, which the Japanese forces had bought and further developed at home.
- Type 100 Armour piercing tracer. Weight 162 g projectile and 431 g complete round.
- Type 100 High-explosive tracer (with self destruct). Weight 136 g projectile and 405 g complete round.