Due to its low priced and great reliability the troop provider M113 presented it self as a valid base for various anti-tank tools systems such as for example TOW missiles or an anti-aircraft weapon like this version. The M163 was developed around a 20 mm gun Vulcan. Rotating barrels (with an immediate fire power of 6000 rounds each and every minute) had been created for anti-aircraft use. The entire system is dependant on an easy
