used in vietnam the vulcan is an absolute must have IMO. especially if you are interested by nato or israeli army during the seventies.
The M163 Vulcan Air Defense System (VADS) is a self-propelled anti-aircraft gun (SPAAG) that was used by the United States Army. The M163 consists of an M168 Vulcan 20 mm cannon with radar fire control mounted on a modified M113 armored personnel carrier. The M168 gun is a variant of the General Dynamics 20 mm M61 Vulcan rotary cannon, the standard cannon in most U.S. combat aircraft since the 1960s, mounted on either an armored vehicle or a trailer.
