My HK 21 taking shape
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Thread: My HK 21 taking shape

  1. #1
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    Default My HK 21 taking shape

    TSC Machine is doing my build

    Put together and not welded...










    The 91 serial number getting ready to be folded up onto the feed box. The 21 Trunnion is welded into the receiver.



    "Beware of the Man with one gun...he probably isnt into guns enough to be safe with it."

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    So, will it be ready by New Years?

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    Very cool. Can you tell us about the parts and explain the HK91/serial number fold? Factory, U.S. made, etc?
    I've got a fever, and the only prescription is more HK.

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    Quote Originally Posted by SudS View Post
    So, will it be ready by New Years?
    At the rate Mike is moving maybe... :)

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    Quote Originally Posted by The Punisher View Post
    Very cool. Can you tell us about the parts and explain the HK91/serial number fold? Factory, U.S. made, etc?


    The SN fold is because to build a 21 the magwell is completely removed from the 91 receiver to make room for the belt feed box and feed mech. Since the serial number is on the magwell removal of the serial number would be a major no-no with ATF. This technique gets around that by technically never removing the serial number from the receiver. If I remember right it was pioneered by Terry Dyer when he was working for Vollmer many years ago.


    FMP Parts kit. Factory German HK 91 receiver. It will have a 21e clubfoot stock.

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    And you guys cring at how I carve around the s/n on an SL8/G36 conversion, lol.
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    Quote Originally Posted by MP5_ForTheWin View Post
    The SN fold is because to build a 21 the magwell is completely removed from the 91 receiver to make room for the belt feed box and feed mech. Since the serial number is on the magwell removal of the serial number would be a major no-no with ATF. This technique gets around that by technically never removing the serial number from the receiver. If I remember right it was pioneered by Terry Dyer when he was working for Vollmer many years ago.


    FMP Parts kit. Factory German HK 91 receiver. It will have a 21e clubfoot stock.
    This is very interesting and sounds like a neat idea. Do you have any reference photos of guns in this similar fashion? I'd like to see how this looks on a completed gun. Thanks.

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    Good luck on the build!!!
    Post pics when completed.

    Tony

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    Quote Originally Posted by Chopstix Kid View Post
    And you guys cring at how I carve around the s/n on an SL8/G36 conversion, lol.
    I've never cringed... :) ATF makes annoying policy all the time... You do what you have to, to work within it....

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    Love the in-process build pics....

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