Well, actually, aftermarket triggers are good sellers because tons of people would rather throw hardware at a software problem. The GLOCK trigger, brand new out of the box may be a little gritty but it works better and better every time you pull the trigger.
Of course this is just an opinion and I'm sure there are people that will say the S&W SIGMA has a Great trigger as well!
Very well put... actually got a chuckle reflecting on how accurate that statement is regarding everyone blaming the equipment.
This was my most recent qualification with a stock Glock 19. Not counting the 6 shots from the hip, the rest of the group measures 2 3/4" with 12 or 18 shots fired from the 15 yd. line & 18 shots fired from the 25.
The Glock triggers are fine if your fundamentals are sound.
In my opinion, the newer 4th gen do seem to be crisper with less overtravel.