The M113 is one of the most famous armored workers provider in track record of army vehicles. It provides a “fully tracked” design consequently entered in service at the start of ‘60s. The M113 was probably the most widely used armored vehicle of the U.S. Army and U.S. aquatic Corps inside Vietnam War. Regarding M113 hull originated the self-propelled anti-aircraft weapon M163 VADS (Vulcan Air Defense System). The M163 adopted the overall Dynamics 20 mm. M61 Vulcan rotary cannon, setup in a tiny turret over the hull, and a radar system the control related to fire. The M163 have been built to complement the M48 Chaparral missile system also to provide you with the best level of anti-aircraft and anti-helicopter defense toward ground troops. The huge firepower of its 20 mm gun could but additionally be properly used, with devastating effects, against terrestrial goals. The M163 wound up getting used mainly by america Army which is however used today by many nations.