My M&P 9c ran flawlessly for the first 3500-4000 rounds
then the mags started dropping out while I was shooting. I flipped the mag release around to left handed mode and the problem stopped while I waited for S&W to replace it. Took a little over 2 weeks to get a replacement mag release.
It was a pretty decent gun. Easy to shoot and easy to conceal... but I sold it after it started flaking out on me