I have a couple FAL receiver castings here for sale. I have done no work on them, they are just as I received them. They are unfinished of course so they may have a little storage rust, but they are fine. If you want to build your own receiver, or build a dummy gun, this is the part you need. I would like $45 each plus shipping.
Blueprints to finish these can be found free on the net.
I take USPS MO only. First email saying "I'll take it" gets them.