I have a S&W M&P SPORT 2 AR 15 and I used some hot perfecta .223 ammo at the range and while I was cleaning the bolt carrier group I noticed the firing pin had some tiny chips or cratering on the tip my question is should i get another s&w firing pin or are aftermarket pins ok?? I have a mil-spec colt and a nibx boron coded pin but I had a bad experience before with aftermarket firing pins on a sks so I wanted to ask first before I go to the range and use a firing pin that is not original to my rifle.