A 20mm cannon used by Japanese fighters and bombers during [[World War II]]. It is based on the Oerlikon series of autocannons which are operated by advanced primer ignition blowback.

There are two variants of the Type 99 cannon. The Type 99 Mark 1 is a light weapon but the short barrel and projectile chambered reduced the projectile range and hitting power. It is fed by a drum magazine or later, belt feed. The Type 99 Mark 2 is a heavier weapon which reduced its rate of fire but has a longer barrel and chambered for a longer projectile, making it an effective weapon against allied aircraft. Like the Type 99 Mark 1, it is fed by a drum magazine or later, belt feed.

h4. External links

* "Wikipedia: Type 99 cannon":https://en.wikipedia.org/wiki/Type_99_cannon
type 99 cannon