FASCINATION ABOUT RARE BREED FRT 15 TRIGGER FOR SALE

There have already been several things which the FATF claimed were a no no and also a decide somewhere would strike down. Since it pertains to FRTs, are these legal to buy any where or could it be just Texas?  Do You need to be a member of some gun rights org? If you are a member of that org can you purchase them anywhere?Still, we're within an am