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trigger job gone bad

Discussion in 'General Glocking' started by d123gaw, Oct 6, 2012.

  1. pm666


    Feb 28, 2009
    Can one round the edges/lose the angles by using Flitz without a Dremel?

    I would really like to smooth out the trigger a little, but I don't need/want what the OP wound up with.
  2. janice6

    janice6 Silver Member

    Apr 4, 2006

    If I were to polish any of my gun parts, I would apply the Fitz with my finger, to the surface of a small block of wood. Then take the part and lay each surface flat on the wood, while "lapping" it. Keep the part flat against the block to hold the surface flat, and the edges get no treatment at all.

    This techneque when used with "polishing compound" works very well to sharpen wood tools without rounding the edges.

  3. NEOH212

    NEOH212 Diesel Girl

    Mar 25, 2008
    North East Ohio
    I've found that polishing the internals on a Glock yields little difference in most cases. The only time it's really noticeable is when the internals are really rough from tool marks or the like.

    All you need to do the polishing is some fine polish and q-tips. In extreme cases, some 2,000 grit sand paper and honing oil works great.

    The area of the trigger bar that the OP polished is the one area that I stay away from. It's a good measure of safety. In all the Glocks I've had apart, the interface between the striker and trigger bar is usually shiny and smooth with in a few range sessions and no amount of polishing is going to make it any smoother than it already is when it's like that.

    The OP will be ok with a new trigger bar. He might also want to get the orange slide cover from Glock to inspect the area in question BEFORE he takes the gun to the range. There should be no less than 2/3 contact between the trigger bar and striker.
    Last edited: Oct 22, 2012
  4. NEOH212

    NEOH212 Diesel Girl

    Mar 25, 2008
    North East Ohio
    If one must polish that area in question, your better off with a extra fine stone and magnifiers to monitor your work. Go slow and check your work often.

    Doing it free hand without taking some kind of measure to keep your angles consistent is asking for trouble.
  5. owl6roll


    Sep 9, 2004
    Huumm....CLP works best.
  6. CaptainXL


    Nov 20, 2009

    But, I guess this, unfortunately, is how people gain additional knowledge.
  7. barth

    barth six barrels

    Oct 7, 2011
    The Free Zone
    I don't mind tuning the trigger with spring and connector changes.
    But 5000+ rounds and a little oil polishes my Glock right up - LOL.

    And my baby shoots sweet...
    Last edited: Oct 30, 2012
  8. dhgeyer


    Jul 15, 2011
    Well, as it happens I just did the twenty five cent trigger job last night and I did use a Dremel tool with black polishing compound. Now, I had noticed quite a while ago that the angle on the back of the trigger bar did not match the angle of the front of the stud on the striker. This was very obvious, because after a few hundred rounds, the trigger bar had actually dug into the striker at the top of its engagement. This indicated that the back of the trigger bar was hard, sharp, and engaging the striker only at its top.

    When I did what I did, I took a 1200 grit diamond hone and took enough off the stud on the striker to take out the indent from the trigger bar. I polished the back of the trigger bar only lightly at the very top, since it was only engaging at the top anyway. I did so little that I am positive I couldn't have changed any geometry.

    Now, I know I didn't create anything dangerous, because I shot the gun this morning and it was fine. I did manage to improve the trigger.

    However, reading this thread I got a bit curious and maybe even a little concerned. So I did a little test. I thoroughly blackened the back of the trigger bar and the front of the striker stud with a Sharpie. Then dry fired the gun several times. Upon taking the slide off and inspecting the both parts, I discovered that there was plenty of engagement, in fact about the full thickness of the trigger bar. However, I also must have rounded the striker stud a bit from side to side, as the area of engagement was fairly narrow in that dimension, and centered.

    I have a spare striker assembly. Absolutely virgin stock Glock parts. I put that in and repeated my sharpie test. Again, there is plenty of engagement vertically. And again the area of engagement is fairly narrow side to side, but this time not centered. The trigger bar is only engaging the striker stud on one side.

    I don't think there's any cause for concern with my gun with either striker, but I do find it interesting. It does not seem that Glock is manufacturing these parts with any great precision. The trigger bar looks like it's straight out of the stamping mill, including the back where it engages the striker.
    Last edited: Oct 30, 2012
  9. JBS


    Apr 4, 2012
    dhgeyer, Do your engagement tests with a magazine with some snap caps or homemade dummies in the magazine as this will cause the slide to be lifted a few thousands just as it is when loaded.
  10. dhgeyer


    Jul 15, 2011
    Well, at first I was inclined to decline, as I hate to waste good bullets. But then I figured, what the heck, a few dummy rounds might be good to have around. They're easy to tell from live stuff - no primers. I'll probably color them somehow. I made 7. I must say it still made me nervous running what looks like live ammo through my gun in the house!

    Anyway, it didn't make any difference. I have no way of precisely measuring the engagement of course, but it doesn't look any different to me. Still about the thickness of the trigger bar, or close to it. This doesn't surprise me, as there is almost no vertical play in the slide at the rear. As you say, perhaps a few thousandths, but not enough to see or make any practical difference.

    Good suggestion for a test, though!
  11. JBS


    Apr 4, 2012
    Good, some have more “slack” than others.

    In addition to no primer I drill a hole or two through the case of the dummy just like the old military ordinance proving dummies.
  12. dhgeyer


    Jul 15, 2011
    My thanks to Bentbiker for making me aware of a tool called an inspection slide cover plate. I had never heard of such a thing. I Googled it, saw the pictures, and thought "what a great idea!".

    It took me about 15 minutes to make a crude one out of a hinge I never used that was the right thickness. The hole drilled partway through is to give me a way to get it back off the slide.

    Please do not click on the following link, as the photo has been removed and you will only get a "404 File Not Found".


    It works. Looking into the back of the slide, I see what my Sharpie test showed me: there is plenty of engagement between the trigger bar and the striker stud.

    So, thank you Bentbiker for that idea, and for added peace of mind.
    Last edited: Mar 6, 2013
  13. Clutch Cargo

    Clutch Cargo Amsterdam Haze

    Nov 29, 2010
    The whole idea is to make rough surfaces into smooth surfaces. An experienced 'smith can use power tools all he wants as he knows the limit on material to remove. Anyone wanting to improve their trigger should use caution and manually polish surfaces. I'm sure apprentice 'smiths manually polish surfaces as well.
  14. Photoman642


    Jul 22, 2010

    Better yet... If a guy doesn't know what the heck he's doing, just save up the $140 for a good drop in trigger. A new firing pin is $50 alone.
  15. glockarmor


    Oct 18, 2011
    Central Indiana
    Reinstall the original connector and see if it still does it. I had the same issue at one point and traced it back to the connector.
  16. AustinTx


    Aug 16, 2006
    That's all that needs to be done. I have very closely examined the internals, of every new Glock, that I have bought. Not a single one has needed any extra polishing. The parts that move across each other are very small points and plenty slick, right out of the box. I'm sure, that I'm in the minority, but that's been my experience with Glocks. The guns stay all OEM parts and I don't remember ever getting brass in my face, failure to extract and eject properly or jams.
  17. Reading this thread reinforces my resolve to do no modifications at all to my G23 (except the butt plug :) It works just fine as is.

  18. Pineapple Devil

    Pineapple Devil

    Sep 17, 2005
    When you dry fired the gun, continued to hold the trigger down, released for the reset, did you feel it fire again or did it just feel like the trigger was resetting?
  19. d123gaw


    Aug 28, 2012
    Not in KY anymore
    everything felt fine when dry fired and reset. I was actually pretty proud of how good it felt dry firing. And then it all went south
  20. Seems to me that it should have "double fired" even in a dry-fire attempt.

    Why would this NOT be true?