Nothing wrong with an M&P, I own one and love it. I have seen a DD quit running, while a group was testing against a LWRC. The LWRC didn't cease, but they tortured them both the same. It took over 4k rounds dry with dirt and sand but, as I was saying I am not knocking your guns at all. Take no offense. I stated my experience with the two systems.
" The strongest reason for the people to retain the right to
keep and bear arms is, as a last resort, to protect
themselves against tyranny in Government...." - Thomas Jefferson