bolt action flakpanzer iv wirbelwind resinOne of several anti aircraft vehicles to utilise the reliable and ubiquitous Pz IV chassis, the Wirbelwind (Whirlwind) mounted a quad barreled Flakvierling 38 on an open topped turret. Around 100 Wirbelwinds were produced in the latter half of 1944, fulfilling the German requirement for a self propelled, multi barrel flak gun capable of engaging targets under 2,000 metres. They became known by their crews as the Keksdode (biscuit tin) due to the