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  1. How Do I Prepare First Time Use of MR556A1?

    HK416 and HK417 HQ
    I know the title of this post sounds stupid, but consider me stupid when it comes to AR's. The MR556A1 is my very first! I am a long time owner of HK USP pistols so I know the drill and can disassemble and reassemble them blindfolded (fibbing a little of course), but consider me very...
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