WHAT DOES FRT FOR SALE MEAN?

I've tried using a number of different forced reset triggers, commencing with rare breeds primary. When the ATF started knocking on doorways while, I disassembled it, grinded it up and tossed it inside the trash as I failed to will need any drama from a lawfully bought trigger. Anyhow, these triggers are magnificent. The FRT-L3 is the best I have e