I have an M&P9, it's my go to HD and CC gun. I shoot it great and its been 100% reliable. The one thing that bugs me is the seemingly sloppy slide to frame fit. It's like nothing I've experienced on any other quality gun. It doesn't seem to effect accuracy, as 3" groups at 25yds off hand is the norm. But I still find it odd. The play I'd say is about 1mm of movement to either side. Is this just a normal design feature? Perhaps to increase reliability in adverse conditions?