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black 68 hrc

  1. MP SHIELD Pistols
    So I'm new to handguns, went hunting with my grandfather's old rifles and shotguns growing up. I just bought my first handgun, the 9mm Shield. The finish says Black 68 HRc. I read that this is a measurement of the hardness and I think they were saying the material was melonite. I just wanted to...
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