Mitch65 Posted February 18, 2015 Share Posted February 18, 2015 (edited) Hey guys!! I'm a new member here and I have recently gotten into IDPA. I need some advice with the sights I had put on my glock 34. I recently had Warren Tacticle sights installed on my G34. I took it to the range and everything was shooting to the left so I used a laser bore sighter and discovered the sights were in fact off. Rear sight needed to be moved to the right I adjusted the sights so they were perfect and dead on at 15-20 yards. Shot the gun and i was no longer pulling to the left. It was shooting perfect and extremely accurate. Here is the problem. The rear sight is off pretty far to the right. see the photo below. What could be causing this? Gun shoots POA but why is the rear sight so far right? Any ideas??? Should i just not worry about it because it shoots perfect or is this a problem? Thanks guys Edited February 18, 2015 by Mitch65 Link to comment Share on other sites More sharing options...
JoshF Posted February 18, 2015 Share Posted February 18, 2015 Have a G17 that is similar but not quite as far with a factory barrel. If someone else would let you try another 34 barrel and see if it shoots true I'd try that before messing with anything. You could also try another locking block from another gun. That would help you find out if it's one part off or a stacking of tolerances. My G17 is just the barrel, I live with it... Link to comment Share on other sites More sharing options...
9x45 Posted February 18, 2015 Share Posted February 18, 2015 (edited) I have seen this many times with new Glock shooters, and it is almot always caused by the shooters grip and not the sights. Have an experienced shooter run a few rounds thru it. I have installed hundreds of aftermarket sights on Glocks in the last 23 years and they all shoot dead center. Check out Dave Sevigny/Robert Vogel grip advice for Glocks. Edited February 18, 2015 by 9x45 Link to comment Share on other sites More sharing options...
Mitch65 Posted February 18, 2015 Author Share Posted February 18, 2015 When I laser bore sighted it its dead on. Could my grip affect this? It's dead on at about 25 yards. Link to comment Share on other sites More sharing options...
Nebwake Posted February 18, 2015 Share Posted February 18, 2015 Bore sights are generally off by quite a lot. Check the barrel lock up perhaps, but I probably agree its the Indian, not the arrow Link to comment Share on other sites More sharing options...
jstagn Posted February 18, 2015 Share Posted February 18, 2015 You could try moving the front site a little to help compensate if possible.. Link to comment Share on other sites More sharing options...
Sarge Posted February 18, 2015 Share Posted February 18, 2015 You could try moving the front site a little to help compensate if possible.. You could try moving the front site a little to help compensate if possible.. you can't move a glock front sight. Link to comment Share on other sites More sharing options...
Mad Doc Posted February 18, 2015 Share Posted February 18, 2015 (edited) Laser bore is inaccurate helps only to get you on paper before sighting in a gun. If you are going to sight in your pistol do it from bench rest and with a sandbag or similar. My guess is that you may be shooting left because you may be jerking the trigger and moving the rear sight compensates for that. If you already tried sighting in in from a bench rest disregard my diatribe. Edited February 18, 2015 by Mad Doc Link to comment Share on other sites More sharing options...
Mitch65 Posted February 18, 2015 Author Share Posted February 18, 2015 I haven't tried benching it yet. It could be me but I shoot my G17 dead on with the sights centered. Maybe the longer barrel on the 34 is causing me to jerk left. I believe grip is the same for both guns. Link to comment Share on other sites More sharing options...
Rob Tompkins Posted February 18, 2015 Share Posted February 18, 2015 (edited) When I laser bore sighted it its dead on. Could my grip affect this? It's dead on at about 25 yards. As stated, boresights may or may not be 100% true to the bore and can only be counted on to make sure you are on paper but having said that if the sights AND laser line up with the POI it sounds like something is off. Did you use a rest to sight it in? That should largely mitigate any grip issues. Edited February 18, 2015 by Rob Tompkins Link to comment Share on other sites More sharing options...
sdrr72 Posted February 18, 2015 Share Posted February 18, 2015 (edited) I had a similar issue with a G17 purchased last year. I sent it back to Glock under warranty, and they said they "replaced several parts" and test fired. It now has the rear sight centered and groups accordingly. Edited February 18, 2015 by sdrr72 Link to comment Share on other sites More sharing options...
9x45 Posted February 18, 2015 Share Posted February 18, 2015 The only time I have seen left shooting Glocks is when the slide cracks at the forward ejection port. It's a hairline crack and you have to look really close to find it. Put it on a bench, over a cleaning rod, with the ejection port facing up, and press down hard on both ends to see it. Link to comment Share on other sites More sharing options...
9x45 Posted February 18, 2015 Share Posted February 18, 2015 You could try moving the front site a little to help compensate if possible.. You could try moving the front site a little to help compensate if possible.. you can't move a glock front sight. He said you could try....... It's just that it fits in a slot and is held in with a threaded bolt. Link to comment Share on other sites More sharing options...
zipper046 Posted February 18, 2015 Share Posted February 18, 2015 you need to sight the gun in using a rest (and steady hand). Shooting freestyle, any imperfection in grip, trigger pull, etc. comes into play and throws the shots off. If you are a new shooter, see if you can get an experienced shooter to shoot it off a rest for groups. 8 times out of 10 when I've seen something like this it's the shooters technique. I've had numerous Glocks over the years...all sights were installed where they were equidistant from either side of the slide and the shots have all been dead on (unless I pull them do to shoddy grip and trigger pull....) Sorry, but if it shoots well off a rest with an experienced shooter (and the sights back to original), then it at least will tell you what you need to work on as a shooter to improve.....it's all a learning curve... :-) Link to comment Share on other sites More sharing options...
b1gcountry Posted February 18, 2015 Share Posted February 18, 2015 I haven't tried benching it yet. It could be me but I shoot my G17 dead on with the sights centered. Maybe the longer barrel on the 34 is causing me to jerk left. I believe grip is the same for both guns.The longer barrel is probably not causing you to jerk left. Assuming it is not you, Take the barrel off the 34, put it in the 17, and see where it groups. If it shoots left, you have a barrel problem.Then take the g17 slide and barrel and put it on the 34 frame. If it shoots left, check the locking block. Otherwise, check your 34 slide/front sight. Link to comment Share on other sites More sharing options...
Givo08 Posted February 21, 2015 Share Posted February 21, 2015 (edited) You could try moving the front site a little to help compensate if possible.. You could try moving the front site a little to help compensate if possible.. you can't move a glock front sight.You can move a glock front sight, and this is often the cause of the rear sight needing to be pushed right. If the front sight is not perfectly parallel to the slide, it will cause you to need this kind of rear sight drift. It is easy to get the front sight twisted this direction because the threads on glock front sights are setup such that when you put torque on the sight screw to tighten it, the front sight will twist so that the rear face of the sight will turn to the right. Try loosing the front sight and re-tightening but being sure to keep the sight parallel. You can use calipers to measure the front and back of the sight to make sure its parallel to the slide. A little bit of movement goes a long way here, and a front sight that is twisted to the right will cause you to have to push the rear sight almost to the right edge of the slide to compensate. Edited February 21, 2015 by Givo08 Link to comment Share on other sites More sharing options...
9x45 Posted February 23, 2015 Share Posted February 23, 2015 I would have assumed whoever installed the sights checked the front for correct fit and parallel. Some aftermarket front sights are just right press fit and tapped in, others I have seen require straightening. True, it the front is off to the right, it will pull left on impact. My method is to torque it down, check for parallel with a scale along each side of the front sight to sight mark on a piece of tape on the top of the slide laid out with a caliper, then twist the front until it is right with a small crescent. Link to comment Share on other sites More sharing options...
librarian45 Posted February 24, 2015 Share Posted February 24, 2015 If you don't have access to a ransom rest, you could try having each RSO put a mag through slow fire from the bench at 10m. If each group is dead center then it's the barrel not the shooters. Link to comment Share on other sites More sharing options...
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