20 Millimeter Automatic Gun

The 20 millimeter automatic gun is a type of firearm that falls under the supply class "Guns, Through 30mm" in the supply group "Weapons." This classification refers to firearms that have a caliber ranging from 20mm to 30mm.

The 20mm automatic gun is typically designed to fire 20mm caliber ammunition, which is larger than standard rifle ammunition. These guns are often used in military applications, such as mounted on aircraft, armored vehicles, or naval vessels.

The automatic aspect of the gun means that it is capable of firing multiple rounds in rapid succession with a single pull of the trigger. This allows for a high rate of fire, making it effective in combat situations.

Overall, the 20mm automatic gun is a powerful and versatile weapon that is commonly used in military operations for its range and firepower.