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Thread: When did Colt switch to crush washers?

  1. #1
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    When did Colt switch to crush washers?

    I was looking at what's being billed as a "vintage XM4" complete upper a guy has for sale. I figure the upper might actually be from a Colt 727 conversion kit, and I'm trying to determine whether its something I want to pursue.

    I noted that the FH was installed with a crush washer. My recollection was that the Colts I've seen from the late 80's through mid-90's featured peel washers.

    Anyone know when Colt made the switch?
    SI VIS PACEM PARABELLUM

    You knew the job was dangerous when you took it.

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  2. #2
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    "Not every thing on Earth requires an aftermarket upgrade." demigod/markm

  3. #3
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    Thanks Scott
    SI VIS PACEM PARABELLUM

    You knew the job was dangerous when you took it.

    Stops jihadis on contact - Lets Roll!

    NRA Life Member

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