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LGS installed wrong rear sight on my G26

Discussion in 'Sights, Optics and Lasers' started by mdarter, Apr 5, 2013.

  1. mdarter


    Feb 9, 2013
    I had my LGS install Glock factory night sights on my G26 Gen4 today after he swore he had the right parts.

    Of course he didn't, and installed the 6.9MM rear sight instead of the 6.5MM he should have installed.

    I went to the range and tried it out; if it was off much at 5-8 yards I was apparently compensating for it; seemed pretty good to me.

    What is the impact of having the wrong rear sight put on my G26?
  2. RayB

    RayB Retired Member

    Dec 2, 2005

    That, my friend, is the impact of having the wrong rear sight on your G26! :dunno:

    Me, I'd have the guy install the correct sight, as I am sick to death of giving people passes for avoidable screw-ups! :steamed:

    But that's me! :miff:


  3. Rev.357


    Jan 14, 2012
    Heath Springs SC
    Make him put the right one on!
  4. bentbiker

    bentbiker NRA Member

    Sep 11, 2009
    Orange County, CA
    At 8yds, a .4mm error on the rear means you shoot higher by only .8". And, since the sights are designed to be POI = POA at 25 yds, you'd normally be about .5" low at 8 yds -- a net of .3" high. So, it wouldn't be surprising that you couldn't see a problem at that distance. Try shooting at 25yds and the .8" becomes 2.5" high with no offset; still not a big difference.

    You didn't by any chance tell him you wanted it dead on at 5-8 yds, did you?
    Last edited: Apr 5, 2013
  5. mdarter


    Feb 9, 2013
    Couldn't agree more, but as tired as I am of screw-ups, I'm more tired of battling to get it right.

    Bentbiker, that was exactly what I was looking for. That's well within my margin of error.

    I'll have them order the right one, but at least I know what I've got.

    Thanks guys.
  6. JBP55


    Mar 4, 2007
    Bentbiker is right about the 2.5" at 25 yards. At normal combat distance for a pistol you will not see much difference.
  7. jhc37013


    Apr 30, 2007
    There is no excuse for that one, how did it go down did he originally order the sights for you and then call to say they where in?

    Never take the word always look at the description on the package even if the guy has the very best intentions, same thing almost happened to once but the installer caught his mistake just in time and grabbed the correct sights off the shelf instead. He had installed many sights for me before and was doing it for free since I bought them their but the shop was swamped and he was doing many different things at once and got a little distracted.

    What really gets under my skin is paying for a set to be installed and then seeing the end result being a crooked front sight or dents/scratches on the rear sight, especially the latter because that can't be fixed.
  8. Well, GNS come to armorers in itty-bitty baggies - rear and front being separate; a common front with marker-scribbled part numbers on the baggies and different p/n's for the 6.1, 6.5 and 6.9 rears - NR 17G25, 17G24, 17G26 respectively.
  9. cciman


    Jan 19, 2009
    SW Ohio
    If you had never known the PN or measured, you may have never known. Is he taking the tall ones back or letting you keep them?

    What if you put the correct ones in, then discover that you are shooting way off.. most shooters shoot low left or low right.
  10. mdarter


    Feb 9, 2013
    I didn't have the part number ahead of time (I know); I was in the store, asked if they had GNS and he said yes, asked him to check and see if they were the right ones for my G26, and of course they were. It was only after the fact that I got the bags with the part number, which was the only way I knew.

    I printed out a couple spec sheets on the different part numbers for rear sights and went back to the store. I said it appeared they installed the wrong rear sight, to which they replied "there's only one". ;-)

    They're willing to order the correct sight, but I'm wondering how long that will take. I think I'll have them move the sights to my G30 and put the original sights back on the G26.

    Which leads me to a question; can the original factory sights be reinstalled? Any issues?

  11. Glock polymer sights are generally thought of as throw-away and likely will not hold tight if reinstalled. Might be okay for a stopgap.

    posted using Outdoor Hub Campfire
  12. You should also be aware that the 6.9 mm (or +1, as some after market suppliers refer to it) that comes on the 45ACP / 10mm Glocks IS CONSIDERED TO BE THE CORRECT sight for the G26 with its short barrel by some sight suppliers.

    You should not be concerned about what the markings on the sight are, BUT SHOULD PAY ATTENTION to how those particular sights work on YOUR G26 and with YOUR EYES.

    Also keep in mind that different bullet weights (115 vs 147, as an example) will cause the POI to shift.

    I personally always put +1 sights on my G26's - they work the best for me.
  13. JBP55


    Mar 4, 2007

    All True.
  14. mdarter


    Feb 9, 2013
    Good point; seems like barrel length would dictate this.

    My groupings from the G26 with the +1 rear sight are tight and center at the 5-9 yd distance, my primary practice distance. I like the sights and sight picture, both daytime and low light. I'm going to leave them on.

    FWIW, my G30 (factory polymer ball in the bucket) is the same result (tight and center), but my G17 (ball in bucket) is consistently tight but higher. I was a little worried about having to adjust for different sight lines but it sounds like the +1 is better for me on the 26.

    Thanks for the input.