Has anyone tried the Performance Center Action Package for the M&P? Did it improve the trigger significantly? I like my M&P 9mm, but the trigger is gritty and feels different from shot to shot.

There are gunsmiths who offer trigger jobs on the M&P for quite a bit less than the S&W - has anyone tried any of these?

If you search on Apex you will find a lot of info on these drop in performance parts that a lot of people, including myself, have purchased. You will be amazed at the difference! (at a much lower cost)