I'll agree that the plastic part thing isn't really ideal, but from my own experience, the guns seem to work just fine with them. Swapping out the plastic triggers for steel ones seems to smooth the trigger pull a little bit. Other than that, I've messed around with swapping guide rods and stuff on a few different 92's and it's been impossible for me to see any improvements, with the exception that I prefer the larger Elite II or Stock mag releases and they too are steel.