Isn't NiB the stuff that was on my cracked bolt? Geeze... I've forgotten a lot about the AR over the last few years.
My issues with NiB were that:
1. It was a carbon fouling magnet. My bolt looked black all the time because fouling stuck to it like a magnet, and...
2. Whomever coated by bolt did it wrong and brittled it so that it failed. One lug fell off, then another soon after. I sent it to a member here for destructive analysis.
Bottom line... I'd NEVER buy anything NiB for the AR15 based on the bad surface texture that grabs onto fouling and won't let go.
"What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v
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