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Thread: HK-93 bolt gap - same as G3?

  1. #1
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    Default HK-93 bolt gap - same as G3?

    Are they measured the same way? I'm not at all familiar with the 93.

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    Quote Originally Posted by Orion6 View Post
    Are they measured the same way? I'm not at all familiar with the 93.
    Yes. 91/93/94 all the same gap specs.

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    Awesome, thanks.

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    Quote Originally Posted by HART1 View Post
    Yes. 91/93/94 all the same gap specs.
    Almost.

    91 and 93 are min .1mm - max .5mm, .45mm is "ideal" (.004"-.020", no "ideal" mentioned in armorer's manual, but assume the same as 94/MP5)
    94 has a minimum of .25mm, same max(.010"-.020", .018" "ideal" mentioned in armorer's manual)
    Last edited by AviatorDave; 03-29-2009 at 02:13 AM.


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    Smile Thanks for the specs

    Quote Originally Posted by AviatorDave View Post
    Almost.

    91 and 93 are min .1mm - max .5mm, .45mm is "ideal" (.004"-.020", no "ideal" mentioned in armorer's manual, but assume the same as 94/MP5)
    94 has a minimum of .25mm, same max(.010"-.020", .018" "ideal" mentioned in armorer's manual)
    AviatorDave,
    You must have better info than I. I don't have an armorer's manual. When I press in a barrel I try to set them at .020 then I pin it. After firing the weapon I end up with around .018. This has seemed to work for me. I can go up or down with rollers. I am not a gunsmith, this is just a hobby for me. What do you think of the way I do it?

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    Quote Originally Posted by HART1 View Post
    AviatorDave,
    You must have better info than I. I don't have an armorer's manual. When I press in a barrel I try to set them at .020 then I pin it. After firing the weapon I end up with around .018. This has seemed to work for me. I can go up or down with rollers. I am not a gunsmith, this is just a hobby for me. What do you think of the way I do it?
    You've probably done more than I have, I've only done about 6 of them so far.

    Oh yeah, that'll work fine. I shoot for .018, .019, or .020 when installing a barrel. If it's .016 or .017, I push it out and go again. Well I used to anyways, now I just push it back the other way a little bit. :) If I got .020", I'd leave it there and call it a day. I'm not really sure why they call .018" "ideal". It doesn't go into any detail as to why that would be the sweet spot.

    What? No manuals? Why didn't you say so?

    http://stevespages.com/pdf/hk_mp5_armorers_manual.pdf

    http://biggerhammer.net/manuals/

    And go easy on the stevespages ones, whenever people start downloading all of them, he takes them all down for a while.
    Last edited by AviatorDave; 03-29-2009 at 04:47 AM.

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    Sweeeeeet!

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    Thanks again guys!

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