Hmac, no, not in my opinion. I feel its a cosmetic issue only. I don't have the spec on the BC, but I would guess the steel will stand alone just fine. If their comps were soft, I think it would show more than finish wear by the 5k mark. BTW, this is speculation on my part.
I have used a high heat ceramic that takes FA just fine, and standard H series cerakote seems to handle most mag-fed FA, though they don't spec it to do so.


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