This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 In this version of the PzKpfw II was improvised model Kummersdorf evidence on 13 June 1940. In October of that same year Alkett completed a prototype on the chassis of PzKpfw IIB was not able to absorb GIS 33 recoil . On January 18, 1941 chassis was modified to increase its length and Pz.II thus adding sixth wheel to solve this problem and Alkett completed 12 units, 7 at the end of 1941 and 5 in 1942. The installation of the barrel allow an elevation of 75 º but the small and poor shielding advised against handling mass production of the model. All units were delivered to DAK were received in Libya. By the summer of 1943, all the Bison had been destroyed or abandoned. The British army regained at least half a dozen stripped chassis were retrofitted with various weapons and subsequently sold or given to Egypt.