GETTING MY BUY RARE BREED TRIGGERS TO WORK

There have been several things that the FATF stated ended up a no no as well as a decide someplace would strike down. Since it pertains to FRTs, are these lawful to buy anyplace or is it just Texas?  Do It's important to certainly be a member of some gun legal rights org? If you are a member of that org can you purchase them any where?I feel their