Here is the verdict as it stands after shooting the gun, 1850 rounds of assorted factory ammo, zero malfunctions with the M&P, we tried in vain to induce problems but failed, none of the roll pins drifted out as what was reported on ar15.com, the medium size grip was used and we had shooters of both ###es use it without any problems, shortest shooter was 5"1 and tallest was about 6"4, muskyhunter was also present and can provide additional information on the M&P and its performance.
gadget