The 30mm gun is a type of autocannon that fires 30mm caliber rounds. It is commonly used in military applications, including aircraft, naval vessels, and ground vehicles. The gun is known for its high rate of fire and effectiveness against both air and ground targets. One of the most notable examples of the 30mm gun is the GAU-8 Avenger, which is mounted on the A-10 Thunderbolt II aircraft. This weapon is designed to engage armored vehicles and provide close air support. The versatility and power of the 30mm gun make it a valuable asset in modern warfare.