Privacy guaranteed - Your email is not shared with anyone.

Welcome to Glock Forum at

Why should YOU join our forums?

  • Reason #1
  • Reason #2
  • Reason #3

Site Description

Why not lower the ejection port?

Discussion in 'General Glocking' started by Ranski, Oct 31, 2012.

  1. Ranski


    Oct 8, 2012
    While reading up on the Gen 4 BTF / erratic ejection problems, I found forum posts (not all on this forum) by Randy Lee of Apex, and others, claiming that the ejection port is at least part of the issue, and that the gun would eject better if the port was lowered, like on most 1911s.

    However, I have not read tons of posts with pictures of lowered Glock ejection ports. In fact, most of the very little info I turn up when searching, involves lowering the port when adding a red dot mount.

    So why have more people not done this? If you personally have had ejection issues that you couldn't fix by swapping parts, why have you not lowered your ejection port?
  2. DocWills


    Mar 11, 2012
    It is the answer as we found long ago with the 1911, however since is was a recent issue as opposed to the 1911 most refuse. I polish off the new extractors and clean up the slide slot for the extractor.Pretty much just like a 1911 too, except its external.:supergrin: Its actually ammo related as it pretty much doesnt do anyhing.

    I keep looking for a gun thats really bad on ejection to do the port on.

  3. dhgeyer


    Jul 15, 2011
    Google "Glock slide crack". There are numerous reports of same, usually (but not always) with high round count guns. But when they crack, under the ejection port is where they do it. For this reason I would never do anything to weaken that area.
  4. DocWills


    Mar 11, 2012
    I think it would be ok round cut, however I agree about possibly ruining a slide. I think enough materiel could be found inside the cut to do it without cutting slide mass.:wavey:
  5. di11igaf

    di11igaf ibew

    Jun 25, 2012
    What's ammo related, BTF issues?
    If you are saying btf is ammo related, what would you like to see. You tell me the ammo, ill show you my gen 3 ejecting at 6:00 or to the left.
    124 NATO
    135+p critical duty
    124+p gold dots
    115 critical defense
    Multiple hydra-shok loads
    124 lawman
    147 AE
    124 AE
    115 FC crap
    these all ejected roughly the same, and I have vids for pretty much all of these that I've posted in the past.
    My gen 4 ejects all of these to the right

    As for lowering the ejection port, will it help? Maybe. But it will also completely kill the warranty, and possibly make it hard to sell. If you lowered the port, and the problem persists, then you're royally f$%*ed
    Last edited: Oct 31, 2012
  6. dhgeyer


    Jul 15, 2011
    If I remember correctly, back in the day when people were lowering ejection ports on 1911 and 1911 A1 pistols, the ports were quite small to begin with. People lowered them to the point where they looked about like modern pistols do now as manufactured. I did that to a Colt 1911 A1 I had years ago. Of course one wouldn't think of doing that now to a valuable old gun like that. Back then they were cheap and easy to get.

    Another point is that 1911 and 1911 A1 slides were machined forgings, which are stronger per unit of mass than investment castings, which I expect is how Glock makes their slides.

    Another reason people may not lower their ejection ports very often is that, unless you have a well equipped machine shop, it's either hand work or a Dremel tool. It's not a job many people would tackle. You would have to have someone like Randy Lee do it, and that would not be very cost effective. On the other hand, with a Glock it's quite easy to swap parts in and out. Doing a little polishing here and there isn't all that hard either. So, that's what people try first.

    These, and the other reasons people mentioned above are, I suspect, why you don't see it done very often.

    None of this is to say that it wouldn't work. It might. But, at least with the Gen4 guns, there seem to be other avenues that work with less cost, risk, and work.
    Last edited: Oct 31, 2012
  7. voyager4520

    voyager4520 -----

    Apr 25, 2009
    SE Colorado
    That's the weakest part of the slide. I'd rather change the angle of ejection with ejector and extractor modifications. A 28926 ejector and an old non-LCI 15 degree extractor fixed the ejection in my Gen3 G27.