Off topic but researching this thread led me to this interesting tidbit I had never heard of, all I can say is WOW how board are they ?
this was on the ATF FAQ site.
Q: How do I obtain a classification from ATF for my “potato gun?”
Any person desiring a classification of a “potato gun,” “spud...
Well probably correct FFL restrictions probably don't apply, that said I still won't do it knowingly. Not interested in being a poster child for why private sales should be banned if something goes amuck. Simply not worth any potential future hassle to me.