At the range this weekend my M&P 9 fullsize seemed to finally break in. I have about 800 rounds through it. Was having problems shooting low left, but resolved that after changing my grip. It seems the more I shoot it the better it feels. the trigger has smoothed out nicely and my groups are getting closer.My only problem is that when I go to my local range, people always want to hold it or shoot it. i have two friends that have recently purchased a M&P after shooting mine. Maybe Smith & Wesson could send me a couple of free mags for my commission.