Cool! Are you familiar with the Internet Movie Firearms Database? http://www.imfdb.org/wiki/Category:Video_Game
There are no Wing Commander game entries yet, but it sounds like you might be able to add one!
Yeah i contributed some stuff back when you didn't have to register. Unfortunately i'm not good with wikis, all the rules and templates give me a headache. If anyone else wants to add one, here's what i know:
Wing Commander Prophecy:
Marine Rifle - Calico M951
Pistol - Unknown
Wing Commander (movie):
Rifle - AK (74 probably, you can still see the tip of an AK-74 type flash hider. Unfortunately you don't see very much under the whole setup, but the bolt is definately from a Kalashnikov-type weapon)
Pistol - Beretta M92/F or M9 (Or a Taurus, again all marks of identification are obscured by other stuff)
Wing Commander Price of Freedom:
A couple of those guns seen in the hands of the Telamon colonists could be real weapons, one looks vaguely like a Goncz pistol but, again, very hard to say for sure.
Then there's this rifle shown as concept art (bottom one):
which looks like it would have been built out of a Muzzelite 10/22, but i didn't see it anywhere on screen.
All the other weapons look like they're built from scratch.
That's an awful lot of maybes and probables, i don't know if that qualifies for its own entry.
Well... maybe John Rhys-Davis took some of them as souvenirs and then brought them to the shooting location
Once again, the screenshot is from Emperor: Battle for Dune, not Dune 2000. Emperor had a bigger budget for the FMV scenes. I still think it's the same weapon, it has all the right angles and bolts at all the right places, just without the stock. But i agree the resolution of both the WC3 and Emperor cutscenes are too low to prove for sure.
Here's the concept art of said rifle from the WC3 Book of Props:
In comparison to the actual prop (at least the one on the right):