The M163 Vulcan Air Defense System is a self-propelled anti-aircraft weapon designed to protect ground forces from low-flying aircraft. It features a 20mm Gatling gun capable of firing up to 6,000 rounds per minute, providing a rapid response to aerial threats. The system is mounted on a modified M113 armored personnel carrier, allowing for mobility and protection in various terrains. Introduced in the late 1960s, the M163 has been used by several military forces around the world. While it was effective during its time, advancements in air defense technology have led to the development of more modern systems that offer enhanced capabilities against contemporary aerial threats.