I took my M&P 2.0 compact in .40 out to shoot today. I wanted to try out the 9mm 2.0 compact barrel I bought for it off ebay. The barrel dropped right in, and it ran flawlessly using a 9mm mag.
I also took out my M&P .45 compact. I had just put in the Apex sear and wanted to try it out. A much improved trigger lead to greater accuracy. I have an Apex sear coming for the .40 today.
The .45 at 7-10 yards.