I just did all that except for replacing the firing pin and cutting the plunger spring. It has significantly improved the smoothnes of the trigger. Only trouble is I use CCI primers and is harder than most so I am getting some light strikes. Just ordered the longer firing pin and dawson sights for it. Hopefully that shoud do the trick. As far as replacing the sear, I am going to wait until I have shot it more and see if I still need to get the trigger better. Good luck to you and would be interested to see how yours come out. Thanks