That fad seems to have died down. I don't know if there was any legal pressure, but I suspect just too many folks found out that the 20% wasn't as easy as the sellers said it was. There was some legitimate use in building custom guns, but the frames were generally not high quality, as some of the custom folks found out. Most of the interest came from buyers who thought they had found a way to get around sales restrictions or obtain guns with no "paper".
Alas, finishing an 80% frame required a bit more than a file and a hand drill, and most of them ended up in the junk box.
Last edited by James K; March 7, 2012 at 06:31 PM.