last year i would have told you that it was one fine handgun. much better than the 4006 with its questionable barrels. now after 2 years and a hole pile of ammo at least one of them is starting to come apart. slide rails coming off the frame. just my 2 cents but if you want a plastic handgun just buy a glock. ya i want to buy usa but i will not spend more $ to get less.
Tinman,
Sorry to hear about your problems with the M&P. I have owned the M&P 9 Pro, M&P 9,and a pair of M&P 40's. Put over 4K through each with no problems.
Only one I did have issues with was a very early M&P 9 that had the slide crack at about 7K. Sent it back to Smith and they replaced it at no charge. New slide had a releif cut to stop it from happening again.
As far as the gun just send it back for service. M&P's have a lifetime warranty.
BTW have owned plenty of glocks gen1-gen3 and some had issues too. Plus required maintenance as per glock at 2-3K round intervals to stay running smooth.