hahahaha, they do think they can be easily converted!Didn't you hear? the ATF thinks they can be converted easily into machine guns....
--insert sarcasm here.
I did not see the FFL thing - all I saw was the category it was listed in.
Yes, and this topic has come up before. I mentioned this there too: A lover receiver isn't that amazing. I've seen people make them out of a cutting board.I do remember some airsoft M4s, not that could be converted in their entirety to fire live ammunition, but the lower receivers were able to accept a three-hole AR FCG, and a regular upper could be pinned on.