The conversion has nothing to do with the reset but apex should help a little. If you wouldve bought a 9 you wouldn't have the option to shoot 40 now u have the best of both
Yeah I know the conversion had nothing to do with it. I was able to get more rounds in, in the same session to notice things I haven't before. More along the lines of rapid fire, being able to get on target faster, and not having to adjust my grip after about 5 rounds of 40. I was able to just focus on lining the sights up and pulling the trigger. A few times I thought it reset and it didn't which felt embarrassing to me.
I have a 2013 Shield and I can really tell the difference between the two triggers (FS is June 2012 or so). I wonder if S&W would give me an upgrade for free

? I'd just hate to have to send the whole firearm in.
Nitpicking Aside..
As far as the conversion goes everything seems to lock up great, no extraction issues at all with 9mm magazines, accuracy was good too.
The Recoil in 9mm on the M&P surprised me after shooting 40 for so long, I have to say that my M&P22 kicks about the same/ a little less with 40 Grain bullets (granted the M&P22 is very light.)
I'm glad I went with the factory barrel instead of spending extra money on storm lake. This forum seems to advocate the factory barrel while another M&P forum I frequent act like I've committed blasphemy or an act that will lead to catastrophic failure.
So 135 Rounds so far down the barrel of my 9mm with no malfunctions. I cant wait to get the round count up and report my findings.
I realize that I don't exactly care for 40 S&W anymore, but I suppose its a good option to have. I should pick up a 357 sig barrel if I find one cheap enough too. :S