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early parts

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    early parts

    Just some different parts that are rather early to the AR-15/M16 rifle

    The steel gas tube is not common to find and the only one that I ever found

    nothing is repro

    #2
    Are those front sight posts milled? I don't see a casting line on the front edge.
    Welcome to the Addiction!

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      #3
      I know the second front sight base is milled, photo from my three digit Colt SP1 has the same milled front sight base. I believe all the early three digit SP1 rifles had it.

      Also think the early cast front sight base was manufactured and finished without any casting marks

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