>>64137233
You've already got an FRT installed, it's just locked behind an 80's import restriction mod.
Contrary to popular belief, the Israelis were way ahead of the game with this technology, integrating it into the platform for exported civilian firearms shortly after the initial patents were filed in the US in the 80s.

What you need to do is remove the grip frame from the receiver, take all the internals out, and find the little square plate welded to the inside of the sear pocket.
This is your FRT restriction plate.
Take a Dremel or drill press and remove this plate.
You should now be able to slide the selector switch forward one additional position.
Some grip sticks have this position unmarked, some will have Hebrew characters. In both cases, this is the position you're going to want for FRT firing.
Enjoy anon!