Now this is exciting. I'll keep tabs on this, and I'll look around and see what I can find in terms of HD pictures and such of the weapons.
I also have come across and collected the pep files of the following weapons:
Assault Rifle (Not hd, but may be good for making the base 3d model before detail is added)
Battle Rifle (Going to call this one HQ. It has some decent detail work, just little things like the grip is just flat, no depressions for fingers)
Frag Grenade (Not hd. Not hd at all)
Magnum (Great quality)
Shotgun (Hd)
Sniper Rifle (Great Quality, only missing some detail work on the left side of the action so far as I can see)
Spartan Laser (This one has a super high quality level, it has all the bells and whistles. And methinks would be eye-gougingly painful in pep, but with a cnc machine?)
Just let me know if you're interested. I can always e-mail these files to you. I've got alot of different armor variation pep files too, so if you ever wanted to try some of those, let me know. I have an HD Mark VI chest from the wiki that I'm particularly fond of.
These pieces you are planning to fabricate, should be amazing contributions to the 405th. Congrats on finding the opportunity. Have fun!