Glock shoots left

[orygun]

It's just one gun with a problem. The 43, 43x, 17, 19x all do what they're supposed to do without drifting the sight, or holding for some Kentucky windage

But don't all of the other guns have a modified trigger?
If so, a direct comparison can't be made.
If you're so concerned that your gun is messed up, then maybe you should be attempting to alter your trigger press to see? Use the tip. Use the pad between first knuckle and second. Wrap the trigger finger all of the way through. If you aren't trying "something different" with the shooter, you'll always get the same results.

If you look at all of my handguns, the rear sight is centered, or damn near so. But I bought a Shield EZ that seems to shoot left. Different trigger than I'm used to. I've only had the opportunity to shoot it once and was working on "me" when I ran out of ammo.
It'll be interesting to see how this little one works out.

 

[slam45]

first thing i do with glocks i shoot is to lose the factory sights... i don't shoot any sight with white on them well... i use Dawson or Heine sights... there are other good ones but glock sights don't work for me...keep after it, you'll find what works for you...

 

[CentraloregonJ]

But don't all of the other guns have a modified trigger?
If so, a direct comparison can't be made.
If you're so concerned that your gun is messed up, then maybe you should be attempting to alter your trigger press to see? Use the tip. Use the pad between first knuckle and second. Wrap the trigger finger all of the way through. If you aren't trying "something different" with the shooter, you'll always get the same results.

If you look at all of my handguns, the rear sight is centered, or damn near so. But I bought a Shield EZ that seems to shoot left. Different trigger than I'm used to. I've only had the opportunity to shoot it once and was working on "me" when I ran out of ammo.
It'll be interesting to see how this little one works out.

Stock triggers in all of them, I think someone was skimming earlier and made up the modified trigger thing. With that said, the "problem" 34 has a nicer trigger than the rest of them relatively speaking.

POI is left in my hands, it's left in the hands of others, it's left off of a rest. The sights have been drifted over enough to get the poi pretty darn close to the poa.

Will have a borrowed barrel, and a borrowed slide to test with shortly

 

[orygun]

Get rid of that gun!
Too much "Left" will rot your brain!

I 'spose it will be interesting to see what the source of the problem actually is.
If you have access to all of those spare parts, I'd put a complete "upper" on it and give it a run. Find out first if the frame is the issue. Good bones, ya know?

 

[CentraloregonJ]

Get rid of that gun!
Too much "Left" will rot your brain!

I 'spose it will be interesting to see what the source of the problem actually is.
If you have access to all of those spare parts, I'd put a complete "upper" on it and give it a run. Find out first if the frame is the issue. Good bones, ya know?

Interesting. The idea that the culprit could be the frame is one I haven't had. Thanks!

 

[Koda]

A G34 sight radius will need about .056" rear sight drift to move the POI 4 inches at 15 yards ( checked with CAD system). That would be a large visually obvious offest from the center of the slide.

Keep us posted on what you find as you swap parts to test, im curious to learn if parts from Glock can really be machined that far off to not shoot straight. I'm skeptical.

 

[NeoBlackdog]

A G34 sight radius will need about .056" rear sight drift to move the POI 4 inches at 15 yards ( checked with CAD system). That would be a large visually obvious offest from the center of the slide.

Keep us posted on what you find as you swap parts to test, im curious to learn if parts from Glock can really be machined that far off to not shoot straight. I'm skeptical.

A hair over 7/125ths of an inch is not what I would think of as obvious.

 

[oremike]

This will fix your problem, I went with the red fiber optic front and black rear on my Gen 4 G-32 and it's a shooter for sure.

Sight Set, for Glock® Pistols, Adjustable, by Dawson Precision®

Dawson Precision is the experienced shooter's source for top quality pistols, parts and gear. Our state-of-art facility keeps us on the cutting EDGE of technology, providing you with the highest quality products at the best price.

dawsonprecision.com

 

[DirectDrive]

I'm not even going to try and delve into the math, but a 4" correction at 15yards, especially with a gun that has a short sight radius isn't a large adjustment.

Self defense revolvers often have the trough sight that isn't adjustable, but I only remember a couple of small autos that don't have at least a drift adjustable rear sight. AMT Backup 45 and the Colt Agent had only the trough as a sight. "Line up this ditch and aim it at your target". Honestly, the gun shouldn't have even had the ditch. An extra machining step that was worthless.

Back to the OP, I'd be more interested in seeing what would happen if he shot an identical gun rather than swapping all kinds of parts to see if it's a parts problem, or a shooter problem.

That's what I would like to see/hear about.

It sounds like the OP has several Glocks and is a competent Glock shooter.

 

[Member 53867]

 

[CentraloregonJ]

A G34 sight radius will need about .056" rear sight drift to move the POI 4 inches at 15 yards ( checked with CAD system). That would be a large visually obvious offest from the center of the slide.

Keep us posted on what you find as you swap parts to test, im curious to learn if parts from Glock can really be machined that far off to not shoot straight. I'm skeptical.

That's some solid maths. I didn't think to actually measure how far over it had to be pushed. Sits .060" to the right

 

[NeoBlackdog]

That's some solid maths. I didn't think to actually measure how far over it had to be pushed. Sits .060" to the right

Can you put up a picture of it from behind and slightly above?

 

[Koda]

That's some solid maths. I didn't think to actually measure how far over it had to be pushed. Sits .060" to the right

Heres the CAD sketch, assuming i got the correct sight radius off Glock for a G34.

IMO .056" is a lot to drift a sight.

 

[Member 53867]

Dillon has a sight correction calculator. Numbers match yours.

https://www.dillonprecision.com/sight-correction-calculator.html

 

[Koda]

Dillon has a sight correction calculator. Numbers match yours.

https://www.dillonprecision.com/sight-correction-calculator.html

Ha, that would have been so much easier than firing up my CAD program...

I could be off a few thou because Im not certain the exact sight radius on Glocks website, they listed 3 lengths for the G34. I just picked the top one.

 

[NeoBlackdog]

Ha, that would have been so much easier than firing up my CAD program...

I could be off a few thou because Im not certain the exact sight radius on Glocks website, they listed 3 lengths for the G34. I just picked the top one.

I was pretty impressed with how close your figure is!

 

[orygun]

Heres the CAD sketch, assuming i got the correct sight radius off Glock for a G34.

IMO .056" is a lot to drift a sight.

View attachment 2000672

That's impressive. Seriously.

Sixty Thou makes me think something is not "correct", but I'm not the guy to sweat that small schtuff if the gun is consistent.

If the gun shoots left with anyone, and everyone, shooting it, WTF? It's the gun, not the shooter. Move the sight.

 

[Koda]

If the gun shoots left with anyone, and everyone, shooting it, WTF? It's the gun, not the shooter. Move the sight.

Thats why Im curious about this. Never seen one this far off. I could see drifting the sight .010-.015 but not .06. Im curious what the OP finds out.

 

[64MercurysRule]

See if the barrel is centered in relation to the end of slide at front sight . Equal spacing . Something is not parallel . Whatever it is at least it is being structurally consistent and not variable
. Like an automobile you're moving the sight to align with the barrel like steering aligning with the rest .

 

[orygun]

Thats why Im curious about this. Never seen one this far off. I could see drifting the sight .010-.015 but not .06. Im curious what the OP finds out.

That Tupperware isn't as solid as steel?