I might know someone who has a few receivers, I don't know what he would ask for them. I know he has some Blindee receivers which are fine to use as a re-barrel project.
Let me know if your interested and I'll see what he's want for them. Remember all state and federal laws apply to purchasing a receiver so they'll need to be FFL paperwork on them.
“Americans have the right and advantage of being armed – unlike the citizens of other countries whose governments are afraid to trust the people with arms.” (James Madison, The Federalist Papers #46 at 243-244)