I tried to search on the ammo questions but most were on the M&P15 NON performance model. I have a M&P15 Performance Model. Picked up some ammo PRIOR to getting the gun because it was a great price, however it is the CCI Stinger ammo.. So my question is I have heard that you should not shoot the Stinger in the Performance Model but it is ok in the regular Model? I was not sure of that since I thought aside from some cosmetic features they were the same? Im hoping it is ok or else Ill be looking for a home for a few thousand rounds of stinger! Thanks