I have an M&P 15 that I've had for about a year with less than 1000 rds through it. I noticed that after I chamber a round and eject it, un-fired, the primers will have light strikes from the firing pin. I have been meticulous about cleaning the gun and have done no modifications to it other than some Magpul furniture. I'm wondering if this is normal or if maybe there is something wrong with my firing pin retention pin (or whatever it's called...) or if something is out of spec. I have inspected the entire bolt carrier group and tore it down as I do every time to clean and nothing looks amiss but maybe I'm missing something. Any help would be appreciated.




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