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help needed

  1. I need information

    Colt Semiauto Pistols
    I have a Colt MK4/Series 70 Government Model. Serial number 60156B70. I also have a Colt .22 Conversion Unit. I am in the process of possibly selling or trading these units but the serial number never shows up. I need to know when these items were produced. Can any one give me any information...
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