3.7 cm SK C/30
It is a great weapon for those who do not have the money for a Type 96 AT/AA 25mm Gun. They take up 1x1x1 space, and are the cheapest anti-air weapons available in the game. However, they have a slower fire rate and do less damage then the Type 96 AT/AA 25mm Gun, which doesn't do very much damage itself against planes. Huge batteries are most effective. Along with the Type 96 AT/AA 25mm Gun, this is the only gun capable of damaging high-flying bombers.