Aim\ Make a study on the technology for reducing the weight of large caliber rotary antiaircraft machine gun. Methods\ Two principle schemes of gun body for this weapon system are compared. Analyses of main components of the gun body and tripod mount are made. Results\ The key technology for reducing the large caliber rotary antiaircraft machine gun is pointed out. Conclusion\ In order to developing the rotary machine gun that will be armed by battalion infantry

the technology for reducing the weight of the weapon system must be researched.