This is my medigun prop. There are some that are more on-model, and some that are less lumpy, but this one is mine.
I saw other people using PVC or wood for theirs, but this one’s made with foam, cardboard, and plastic, so it’s hella light. I don’t know how well you can tell from the crappy photos, but I also tried to fatigue it a bit.
There's room for improvement, but I think it's fine like this for now, and I'll be bringing it to Phoenix Comicon this year.
I'm not sure, but I did just move, and the structure of it didn't sustain any damage while it was in the back of the U-Haul (nothing was on top of it, though). Plus, nothing bad happened to it at the 'con. I think it only got a couple of chips on the paint between those two events.