One question asked was why did I choose the M&P over others?
I don't care for the Glock grip angle and the M&P has a more "American Style" grip angle. In addition the interchangeable palm pieces for the grip are a real benefit allowing you to make the gun fit better. Also the new texture on the CORE is awewsome.
I have owned a Glock 17 and a 19, and never could get used to the "safe action" trigger. Same thing on others like the XD, I can't stand the feel of the safety on the trigger.
I wanted to add an optic for use in Steel Challenge, and it made more sense to me to have the optic as low as possible to aid in making the transition from my S&W R8 . In addition, I have seen optics go out in the middle of a run, so having the sights there for co-witnessing just makes sense both for competition as well as tactically for real life. The taller sights of the CORE are ugly at first glance , but they are the perfect combination with the Delta I added. Also, the sights on my R8 are tall too, once again aiding in the transition. This is important for me, since in my last match I shot both guns.
So, on to the gun. I LOVE IT! I purchased the 9mm since I don't own any other .40 and I already load for 9mm, plus low recoil is best for what I do shooting steel. I bought the 4.25" barrel simply because it was what was available, but probablly would have bought it if both were available. Reason, carry is easier with the 4.25" , and the longer sight radius of the 5" isn't necessary since I have the Delta. My other thoughts were that I could add a ported barrel or a comp without getting really long.
The trigger feels good since there is no "safety" on it. There is quite a bit of takeup and out of the box it feels scratchy/gritty. The actual break of the trigger is REALLY light and crisp. We discovered that the scratchyness is causes by the Striker block. A buddy of mine has an M&P with the Apex trigger and the striker block kit installed. His does not have the scratchy feel, however mine is lighter pull than his. I have a striker block kit to put in, but I may not do it. I have put about 800 rounds through it and the gritty takeup has gotten much better. I hate to mess with success.
The CORE has a faster twist barrel and it really shows on the accuracy. It will shoot better than most of us. Of a bag at 25 yards a quarter sized group is pretty easy. (with my eyes)
Reliability, like I said above I have at least 800 rounds through it maybe close to 1000. This has been a mix of my light reloads, 5 different factory brands including hollowpoints and flat nosed bullets. There has been exactly one failure, and it was my fault. It was one of my reloads that would not chamber, it apeared to not have been through the sizing die.

After seeing how rugged the RMR sight is I thought that I was going to put one on. I actually watched the rep beat a table with the sight on a Glock like a hammer.

So all in all it's a hoot. I'm still working on aquiring the dot faster, however I think it has more to do with switching from the revolver to the auto grip angle. I have discovered if I glance at the rear sight it's easier to pick up. However it's faster for me to just "push" forward as I come on target which fixes the angle for me and the dot jumps into view. More repetitions, I'll get it. I was pretty pleased this past weekend with 2nd place in Open and First in Revolver Iron Sights on Steel Challenge. On are Overall scores I took 2nd and 4th. I think both guns are working well. Now I just need to work on me.


In conclusion, if you even think you might like it, trust me....you will.
PS I'm tring to add a pic from my phone but not having much luck.