Looks like a "Raven"s evil step-brother o.o As for the model itself, its excellent (and a heck of a lot better than I can do -- even in Rhino3d -- my native 3d home :b)

I'm also a fan of Battletech, so I know quite a bit about mechwarrior -- is that an official mech, if so, don't recognise it (unless it was a tweaked Raven)