It's as simple as doing the hammer. You have to remove the slide stop first, because the slide stop spring sort of covers the trigger pivot pin. Once the slide stop spring is removed, tap the trigger pivot pin out, remove trigger spring and trigger, then drop in new trigger, replace trigger spring and trigger pin, and reinstall slide stop. The hardest part of the entire process is getting that slide stop pin back in, and the whole thing can be done in less time than it takes to type this. Just take your time and it may help to have an exploded view handy for reference.
HTH
Vance