Because reasonably priced and great reliability the troop provider M113 presented itself as a valid base for different anti-tank tools systems such as for instance TOW missiles or an anti-aircraft tool such as this variation. The M163 was developed around a 20 mm gun Vulcan. Rotating barrels (with a sudden fire energy of 6000 rounds each minute) have been designed for anti-aircraft usage. The entire system will depend on an easy