7.5 cm KwK 40
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The 7.5 cm KwK 40 was a German 75 mm Second World War era vehicle-mounted gun, used as the primary armament of the German Panzer IV medium tank and the Sturmgeschütz III and Sturmgeschütz IV assault guns which were used as tank destroyers. Wikipedia
Shell: Fixed QF 75×495mm R
Barrel length: 361.5 cm (11 ft 10.3 in) bore (48 calibers)
Caliber: 75 mm (2.95 in)
Maximum firing range: 7,700 m (8,400 yd)
Muzzle velocity: 750 m/s (2,500 ft/s)
Place of origin: Germany
Produced: 1942-45