30mm ammunition refers to a type of artillery round that has a diameter of 30 millimeters. It is commonly used in various military applications, including aircraft, armored vehicles, and naval systems. This caliber is known for its effectiveness against both ground and aerial targets, providing a balance of firepower and precision. The most notable platform for 30mm ammunition is the GAU-8/A Avenger, a rotary cannon mounted on the A-10 Thunderbolt II aircraft. This ammunition is designed to deliver high-velocity projectiles, making it suitable for engaging enemy forces and equipment in combat situations.