It is a conversion from Games Workshop’s Taurox APC, with the threads replaced by wheels and the gothic ornament filed off. I also enlarged the engine compartment with plasticard to get something closer to the real thing:
The stuff on top of the miniature are the remote weapon station with smoke launchers, the peripheral vision optics and the gunshot detector.
More photos from other angles:
And finally the leftover pieces of the original kit were used to make a small UGV which looks like a Milrem Themis: