My Gen 5 G26 slide fits on Polymer80 SC frame

Discussion in 'Gunsmithing' started by Rajeev, Apr 20, 2020.

  1. Rajeev

    Rajeev

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    I heard that a G26 gen 5 upper is not backward compatible to gen 3 frame. However, my gen 5 upper fits my Polymer80 subcompact as well as did my gen 3 upper. To the best of my recollection, I've not fired it in this 5 over 3 configuration. But I want to try it.

    Has anyone done this.
     
  2. mtstream

    mtstream

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    The only change that initially took place on the 26/27 going from Gen3 to Gen4 was the texturing on the grip. The 26/27 always used the larger double spring so the "Gen3" frame was sized to accommodate. The same would not be true of the larger models (19, 17, etc).
     

  3. Rajeev

    Rajeev

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    I'm going to assume I can operate my G26.5 upper with the subcompact P80 lower. There is no noticeable problem with interference; the action of the striker seems normal; etc.

    My other option would be to buy a "gen 3" upper for the Polymer80 lower. And I'd prefer not to do that.

    Right now, I have an AA .22LR conversion upper on the P80 lower, which shoots well.