The Type 98 20 mm AAG (anti-air gun) tank was a Japanese prototype of a self-propelled anti-aircraft gun using a twin Soki Type II 20 mm anti-air gun, based on chassis of
the Type 98 Ke-Ni. The rate of fire was 300 rpm, and they had a maximum range of 5500 m. The development began in November 1941. It also did not enter production.