I have never seen a TRS guide. I just made sure the one leg went behind the trigger and pushed straight down with my needle nose pliers. I was just able to get one coil on my allen wrench (used it instead of a punch, could not find a 1/16 punch anywhere), so I then pushed the rest down with a screwdriver and slid the allen wrench the rest of the way over. Then pushed out the allen wrench from the other side with the trigger pin.Anyone remember the guide someone posted for installing a trigger return spring in 60 seconds? I tried looking for it using the search as well as a good search. I couldn't find it. Asking for a friend of mine.
I would say about 60 seconds is all it took once I got the right pliers.