The IDF previously used systems like the M163 Vulcan, an air defense machine gun, before it was retired in 2006. The ground-based systems would be deployed to defend specific points, such as ...

The term air defense is associated ... a tank-based anti-aircraft system with a twin-barrelled 40 mm gun. Work was also underway on the 20 mm M163 Vulcan system, which would be mounted on an ...

However, the Avenger is a lightweight, super portable, surface-to-air weapons system that packs ... in 1988 to replace the aging Vulcan anti-aircraft guns (M163 and M167).