AUTO RESET TRIGGER RARE BREED NO FURTHER A MYSTERY

There have already been a couple of things which the FATF claimed were a no no and a decide somewhere would strike down. As it pertains to FRTs, are these legal to get any place or can it be just Texas?  Do You need to be considered a member of some gun rights org? If you are a member of that org can you buy them anyplace?You do not automatically