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m&p 40
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  1. Smith & Wesson Gunsmithing
    hello, i wanted to polish the barrel of my M&P 40 from the factory matte black it comes in to chrome/mirror finish. I bought my gun about a month ago so it is still pretty new and have only put 150 rounds through it. I am a beginner. I am simply looking for some help and guidance. :mrgreen: I...
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