Picked up a Toy Island Plasma rifle for $8, putty filled the screw holes, primed and painted black with some weathering. The gun is slightly different from HT's version but a pretty darn close IMHO.
"The 800 series had no teeth. We spotted them easy."
Took my endo down to clean him. I don't keep him in a case. Just have him sitting on top of my bookshelf. In the middle of giving him a polish I decided I was sick of looking at horse teeth and a skinny head. Popped the jaw off, and removed the teeth. Going to make a mold, cast a second set of choppers and mod them to be the right size, and have the Arnie gap. Gonna widen the jaw a little to try to at least make it look more like the T1 endo. Also, I pinned the thumbs, so now they articulate and he can make an actual fist.
If the teeth turn out okay I may offer them for the people that want to replace theirs. Removing them is pretty simple, but I'd probably make a video tutorial to go along with the new teeth anyway.