Because affordable and great dependability 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 tool similar to this variation. The M163 was developed around a 20 mm weapon Vulcan. Rotating barrels (with an abrupt fire energy of 6000 rounds each minute) have already been made for anti-aircraft usage. The entire system depends on an easy