It's a plastic Heng Long StuG III G with some mods:

Aluminum reinforced hull.
Metal gears with Promaxx 400s
Bearings in the final drives.
Return roller height corrected.
Waffle zim with ApoxieSculpt (went for field applied look, although I'm not certain waffle was ever field applied)
Brass schurzen and frame (measured off of Voyager's 1/35 PE kit)
Adjustable idlers and metal tracks.
Servo traverse with HL elevation.
Correct recoil movement ala Dan's mod.
DBC RC3 with Spektrum TX/RX
Benedini TBS mini and 6W amp.
Visation speaker.
DBU is in the cupola, you can see the grey/black lenses in the periscopes, those are IR filters.
The emitter is in the mantlet where the bolt is missing. That battle damage is from photos of an actual Tiger.
The Notek and convoy light both function.
Stowage and gear is all leftovers from other builds, etc.
Mud is both Aves and actual dirt in acrylic.
The inside hub tub is sealed and technically speaking waterproof, but I have no intention of finding out.

I think that's it, any questions of thoughts are welcomed.