Originally Posted by ams556
No offense to OP but this is probably the issue. I have had very few malfunctions with my M&P and everyone was while someone else was firing it.
I cringe when I see this thought being put forward...a defense gun, handguns in this case, must have a wide operating window with which to be judged a good weapon. On the contrary to some of the posters here...it is almost never the shooter and his/her grip as the root cause...maybe...and I mean maybe a manifestation of a mechanical issue will show up with grip strength. The weapon is a high precision mechanical instrument and when outfitted with properly fitted accessories, should produce results over a wide array of shooters and conditions. M&P has a great reputation and brand...I would look at the mag first, marking them to see if you can isolate one problematic mag...if the failures occur with several mags/ammo types then send your gun in with a full description...may be a mechanical issue, although rare, they do occur.
Just because a few people go through life without a problem, doesn't mean problems don't exist with other guns in the same population...it is an odds game and you may have drawn the unlucky straw.