I replaced OEM springs with lighter FP spring, FP block spring, hammer spring, trigger return spring and a floating trigger pin. I also did some polishing to smooth out the trigger, as well as pairing it with a new set of rubber grips. DA and SA come in at 5.6# and 2.5#. It works pretty well, and it is one of my favorites. It is a sweet and accurate shooter with very little recoil. New sights would be nice, but I am happy with it right now.