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Glock 21 mags and KRISS extension compatibility

Discussion in 'General Glocking' started by Solscud007, Jun 14, 2012.

  1. Solscud007

    Solscud007

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    I own a KRISS Vector carbine. Due to my living in NY I had to find preban mags to legally keep my KRISS MAG EX 17+ extension installed.

    I have found out some interesting things about the prebans and the KRISS platform. These may or may not apply to the Glock Platform.

    First of all preban mags do not work well with the KRISS mag extension unless you modify them.

    I have two u-notch mags NFML and a square notch FML

    Both types experienced issues with the follower snagging on the way up the mag body.

    I recently noticed that my postban 13 rd mag bodies have a bevel on the leading edge. The post bans do not. I modified my square notch to solve this issue. And it seems to work better.

    KRISS ARMS has updated the spring in the extended mag which results in a lower rd count. So instead of a full 30, you can get 28.

    The Square notch is also a hair too narrow for the bolt of the KRISS vector. it took me a while to figure that out. When the bolt closed, it would only close half way. I thought the feed lips were dragging on the bolt. Only after a long time did I figure out it was the width of the square notch. I filed it wider and it seems to work better.

    Here is a post on a KRISS forum that I posted with pics of the various mags

    http://www.krisstalk.com/t17p15-mag-extensions#1802
     
  2. M&P15T

    M&P15T Beard One

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    The General Firearms Forum would be the place for this info......since it's about the KRISS.

    However, you really, reeeeeally need to post some photos of your KRISS.
     

  3. Solscud007

    Solscud007

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    Well I thought this would pertain to the Glock since it is slightly related to Glock mags. If Glock 21 owners, living in restricted states like me, want to use preban's with the KRISS extension, then they need to modify the mags.

    Ask and you shall receive.

    [​IMG]




    Here's some video.

    [ame="http://www.youtube.com/watch?v=6sDOQtKXMCo"]NWRA April 2012 Match KRISS Vector - YouTube[/ame]

    [ame="http://www.youtube.com/watch?v=mN0U4zvsSFs"]June 2012 KRISS edit - YouTube[/ame]
     
    Last edited: Jun 14, 2012