I dont know if we have any extras floating around at the moment still but we did have a list of people who had extras that needs updating. Alternatively I know I saw people in the C2E2 "official" facebook group that were trying to sell some. Could look there.
I went and found the links in the armory to the things I think you're looking for but again I'm not sure everything you need.
https://www.405th.com/forums/resources/halo-reach-mjolnir-mark-v-standard.44/
https://www.405th.com/forums/resources/halo-reach-mjolnir-mark-v-scout.29/
First Id ask what parts you're looking for. Your post are unclear of what you're planning to build or looking for.
Second I'd say just about all files you find in the armory that can be put into pepakura will be foam compatible. (some clean up may be required)
With the first goal of C2E2 quickly approaching it's time to update progress on the first suit. I had to delay the update a bit since I had to print the entire belt since my cat tried to eat all the foam parts I cut.
Over the past weekend I managed to strap together all of the 3D printed parts...
Update on Panels:
The big news first, We've got 2 panels for confirmed for Sunday!
Panel Name: Welcome to the 405th
Description: Step into the fascinating realm of Halo costuming at the Meet the 405th panel. Join the 405th Infantry Division as they unveil the global community dedicated to...