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AR15.COM
9/3/2012 9:28:46 AM EDT
I purchased a pair of Trijicon night sights for a Gen 3 G26.
I went to install the front sight and it appears the small base area is too small for the hole in the top of the slide. It wiggled around after I tightened the screw.

I tried to google the markings on the sight, nothing came up.

The sights are marked:

T H3 06

I know the 06 stands for 2006 (DOM), but does anyone know what size Glock they are for?

Thank you in advance.

The movement seems to be coming from left and right. The front sight seems snug front to rear.

With FS in and canted right:




With FS in from the bottom of the slide:




Without FS:




FS: photobucket doesn't seem to be rsponding right now. I'll get this pic up asap.
9/3/2012 9:55:15 AM EDT
[#1]
Until recently all Glocks took the same front sight.  IF you have a Gen 4 slide, then I'm not aware if there's a difference in the cut for the front sight or not.  Must be.
9/3/2012 11:49:00 AM EDT
[#2]
I was under the impression that all Glock front sight holes were the same size. I don't know for sure about Gen4s, but I haven't seen sight manufacturers draw a distinction between the Gens for their replacement sights.

I've installed a lot of night sights, many of them Trijicons. I've never had one be loose or wiggle in the front sight hole, especially when the nut has been tightened. Not sure what you've got going on there.
9/3/2012 12:46:00 PM EDT
[#3]
It's a Gen 3
9/3/2012 1:11:43 PM EDT
[#4]
That's weird. Can you post a pic of the front sight, and maybe a pic of your slide (front sight whole). Maybe even one of the inside of the slide with the front sight put in the whole, but no nut in place (to show the amount of extra space).
9/4/2012 3:55:13 AM EDT
[#5]
Now with pics.
9/4/2012 4:28:32 AM EDT
[#6]
Does the sight wiggle around with the screw tightened?   If the sight's stable with the screw tightened, then I don't see a problem.   Hmmm, that hole looks pretty fat to me.
9/4/2012 4:32:57 AM EDT
[#7]
did you use locktite on the screw when you tightened it up???...all of mine whether or not done at GLOCK or at the LGS have used Locktite (Blue IIRC) on the screw when installing Trijicon night sights...and I put Trijicon Night Sights on all of them...

Bill
9/4/2012 4:56:15 AM EDT
[#8]
Some Glock front sights have a little slop just redo it. take it out and put some blue loctite in the hole. adjust to liking. it will fill and voids once it drys and will stop the lateral movement.
9/4/2012 5:06:40 AM EDT
[#9]
When I install and tighten the the FS, it's canted. I can take a pair of pliers and a cloth to cenetr it.
It's pretty snug that way, I can't move it with my fingers.
I'm concerned that if the front sight get bumped with enough force, it will shift/cant.
My other glocks had no canting. All the FS's fit nice, snug and straight.

Thank you all for the tips and advice.
9/4/2012 5:14:03 AM EDT
[#10]
Quoted:
When I install and tighten the the FS, it's canted. I can take a pair of pliers and a cloth to cenetr it.
It's pretty snug that way, I can't move it with my fingers.
I'm concerned that if the front sight get bumped with enough force, it will shift/cant.
My other glocks had no canting. All the FS's fit nice, snug and straight.

Thank you all for the tips and advice.


I've probably put about 30 or so night sight sets on glocks.

Some have wiggle room, some dont.  None of them have ever caused a problem when installed.

FWIW, we always use high heat red.  That area of the firearm can get awfully hot during a long string of fire, and I've seen blue loosen up a couple of times.

Do as you said, and take the pliers to center the sight after you tighten it.  It will take one hell of a bump to throw it out of whack.
9/4/2012 7:02:42 AM EDT
[#11]
My Trijicon sight has a bit of "slop" as well but it doesn't seem to be an issue.

FWIW, I used blue loctite and while red may be more appropriate I just don't shoot enough in one session to cause the blue to loosen.
9/4/2012 7:14:55 AM EDT
[#12]
Quoted:
Quoted:
When I install and tighten the the FS, it's canted. I can take a pair of pliers and a cloth to cenetr it.
It's pretty snug that way, I can't move it with my fingers.
I'm concerned that if the front sight get bumped with enough force, it will shift/cant.
My other glocks had no canting. All the FS's fit nice, snug and straight.

Thank you all for the tips and advice.


I've probably put about 30 or so night sight sets on glocks.

Some have wiggle room, some dont.  None of them have ever caused a problem when installed.

FWIW, we always use high heat red.  That area of the firearm can get awfully hot during a long string of fire, and I've seen blue loosen up a couple of times.

Do as you said, and take the pliers to center the sight after you tighten it.  It will take one hell of a bump to throw it out of whack.


Will do.

Thank you all once again - Glock On!

ETA: How hard will it be to get the FS off with the red loc-tite when it's time to change it out?
9/4/2012 8:03:46 AM EDT
[#13]
Quoted:
When I install and tighten the the FS, it's canted. I can take a pair of pliers and a cloth to cenetr it.
It's pretty snug that way, I can't move it with my fingers.
I'm concerned that if the front sight get bumped with enough force, it will shift/cant.
My other glocks had no canting. All the FS's fit nice, snug and straight.

Thank you all for the tips and advice.


You sure that sight is "canted" and not just a little rotated?  IF you properly tighten the screw, having applied Loctite (I use red 271 Loctite) ONLY to the screw threads, then you should have a secure sight.  Blue Loctite isn't made for filling voids. And NO, you won't have to apply heat to remove the screw, if you use 271 Loctite.  

9/4/2012 8:48:28 AM EDT
[#14]
Hold the sight in place where you want it with a pair of pliers,tighten the screw from the bottom after covering the screw in red loctite,let it dry 24hrs and never worry about it again.  TJR