I shot my 9mm M&P yesterday at our OK State Sectional and it ran great. It was cold, windy, and several of the stages had very fine grained dirt that mags dropped into. I just banged them against my pants let, blew a little dirt out, and kept reloading them. No malfunctions, or at least none I could blame on the gun. I noticed a couple of other shooters that have switched over from Glocks shooting the M&P as well. One shooter did well with his .40 M&P and hasn't even been shooting it until last week.