MR556 A4 Upper Receiver

  • HK MR556 A4 COMPLETE UPPER - RECEIVER 5.56 11.5" BARREL

    HK MR556 A4 COMPLETE UPPER – RECEIVER 5.56 11.5″ BARREL

    $2,179.00

    HK MR556 A4 COMPLETE UPPER – RECEIVER 5.56 11.5″ BARREL

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  • HK MR556 A4 COMPLETE UPPER - RECEIVER 5.56 16.5" BARREL

    HK MR556 A4 COMPLETE UPPER – RECEIVER 5.56 16.5″ BARREL

    $2,179.00

    HK MR556 A4 COMPLETE UPPER – RECEIVER 5.56 16.5″ BARREL

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