I've heard and seen two of them blow up on the range, M&P's that is.
Now, whether or not it was rifle related or ammunition related is the real question. Use quality ammunition at all times, even if it costs you more. Don't fall into the trap of purchasing somehing off the shelf at Wal Mart just because it's there and the price seems right.
I'd stick with Remington, but not the PMC stuff, and other high end manufacturers. Unless your confident that reloads are from quality manufacturers stay away from them. You will be sorry and the warranty will not cover your loss of the rifle.
Silver State Armory is my primary source for ammunition for the AR15 rifle. Remington high end like the Premier Match is also another of the heavier loads that I enjoy.