Model was created in 3ds Max 2009 and converted in multiple formats. All formats include materials and texture maps. The Max format uses mental ray materials and renderer. There's no need for a third party plugin or anything else, just drop your model in the scene and hit render.
The turret is a separate object and may be rotated at will.
The Leopard 2 is a German main battle tank (Kampfpanzer) developed by Krauss-Maffei in the early 1970s and first entering service in 1979. The Leopard 2 replaced the earlier Leopard 1 as the main battle tank of the German Army. Various versions have served in the armed forces of Germany and twelve other European countries, as well as several non-European nations. More than 3, 480 Leopard 2s have been manufactured. The Leopard 2 first saw combat in Kosovo with the German Army and has also seen action in Afghanistan with the Danish and Canadian ISAF forces.