The 37mm Pak 35/36 was introduced in 1928 and was developed by Rheinmetall. It was first used in 1936 during the Spanish Civil War. During the early years of WWII it formed the basis for many other countries anti tank guns. The KwK 36 L45 was the same gun as appeared on early versions of the Panzer III. Kit is a 20mm Zone rapid build with around 6 parts each and comprises white metal parts. Includes 2 guns and 6 gun crew.