Model created in 3D Studio Max 2009 and converted in multiple formats. All formats include materials and texture maps. The Max format uses mental ray materials and render. 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.
Accurate scaled model, units cm.
Model centered at 0, 0, 0 axis coordinate points.
Main objects correctly grouped and named accordingly.
Three main 2048 x 2048 texture maps.