RARE BREED TRIGGER THINGS TO KNOW BEFORE YOU BUY

There are some things that the FATF stated were being a no no plus a judge someplace would strike down. Because it pertains to FRTs, are these lawful to acquire any where or is it just Texas?  Do you have to be a member of some gun rights org? If you are a member of that org can you buy them wherever?That could be pleasant but my impact would be t