I won't carry anything other than a factory Glock trigger and it's not out of fear of the legal boogeyman. The factory trigger is entirely shootable, reliable and safe if you handle it properly. I'm not willing to short one of those elements in hopes of improving another.
“Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals. It can only be ensured by instinct, sharpened by thought practicing the stroke so often that at the crisis it is as natural as a reflex.” ~ T. E. Lawrence