The PaK 38 was a German anti-tank gun developed in 1938 by Rheinmetall as a successor to the Pak 35/36. The PaK 38 fired a 50 mm calibre shell with a penetration ability of 78 mm for the high-explosive shell and 120 mm for the tungsten-cored armour-piercing shell at a range of 500 meters. The PaK 38 was mounted on a two-wheel split-trail carriage, and fitted with an L/60 barrel. Research PaK 38