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sig sauer p220 9mm

  1. New Sig P220 Proofing Help

    Semi-Auto Handgun Discussion
    I just bought a Sig P220 and can't find what the proofing marks mean. I figured there were some proofing experts out there that could help me. Please take a look at the pics below and let me know if you have seen any like these. Just trying to understand some of the gun's history. I also...
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