Quoted: NiB when properly applied and heat treated can offer a similar wear and corrosian resistance to hard chrome. The true benefit is that like its electroless nickel counterpart if delivers a much more controlled and uniform coating. This could greatly reduce the bore and rifling uniformity problems associated with hard chrome. The end result is a more accurate barrel without a loss in protective qualities. I would really like to see how it works in real world applications.
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True, except they are not talking about replacing the chrome lining of a barrel, but replacing the current anodized coating of the aluminum upper/lower receivers with the nickel boride.
This will be interesting, since NiB has superb wearability, lubricity and corrosion resistance and can be plated to aluminum. I wonder if there is a way to color it and eliminate the gloss, or whether they will apply a secondary coating of something like Norrell's/GunKote or something similar.