Gx. 33 (Type 33)

A Japanese 20 mm anti-aircraft cannon used during World War II. It was a more modern version of the Type 9 cannon and was used extensively by air defense units.

Gx. 9 (Type 9)

A Japanese 20 mm anti-aircraft cannon used during World War II. It was a highly effective weapon against aircraft, but was vulnerable to ground attack.

Gx. 20 (Type 20)

A Japanese 20 mm cannon used during World War II. It was a versatile weapon used on aircraft, tanks, and as anti-aircraft artillery.