WHAT DOES FRT-15L3 MEAN?

I've tried various diverse forced reset triggers, beginning with rare breeds original. When the ATF started off knocking on doors however, I disassembled it, grinded it up and tossed it in the trash as I failed to have to have any drama from a lawfully acquired trigger. Anyhow, these triggers are amazing. The FRT-L3 is the greatest I've utilised to