You guys are way more on top of this trigger pull issue, with more details than I ever thought I would want to know
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However, I've been unhappy with the "breakpoint" on both my M&P 9 FS and my 40 Shield. As my 40 is my carry gun, I had my gunsmith put in an Apex kit about 2 weeks ago. Haven't had a chance to test it yet at the range do to NO AMMO available. However, that recently got resolved as I now have 7 boxes.
Anyway - I can tell you this much, without knowing the actual trigger-pull pounds, the dryfire "feel" is absolutely great. I should have had my gunsmith measure the pull but I was too stupid to ask. (I'll get him to do that next time in the store.) But -- I assume it must be down around 5 lbs and the breakpoint is as smooth as I would ever want it to be. I can't wait to take it to the range as I am positive my accuracy will have increased ten fold. I plan on doing the same mod for my 9 FS.