The 7.5 cm KwK 42 L/70 (from 7.5 cm Kampfwagenkanone 42 L/70) was a 7.5 cm calibre German tank gun developed and built by Rheinmetall-Borsig AG in Unterlüß during the Second World War. The gun was used to equip the SdKfz.171 Panther medium tank and the SdKfz.162/1 Jagdpanzer IV/70(A)/(V) tank destroyer. When mounted on a tank destroyer it was designated as the 7.5 cm PaK 42 (7.5 cm Panzerabwehrkanone 42). The key feature of the weapon was its high muzzle velocity which enabled high accuracy and
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