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9/22/2017 12:11:25 AM
Posted: 12/31/2005 6:22:34 AM EDT
Mine seems a little off, like it's leaning to one side. It's mounted to the receiver, and regardless of whether the battery compartment hangs out over the Larue forend or I mount it back toward the rear of the receiver, it never looks quite square.

Is this a problem with the unit? Would the Larue mount take care of this? ThankS!
Link Posted: 12/31/2005 10:32:48 AM EDT
Link Posted: 12/31/2005 1:27:41 PM EDT
Assuming it's the EOtech, will they replace it, I've noticed mine leaning too on my colt upper. Is there any attachment method that can cause this with an otherwise in spec sight. I.E. too tight/ not tight enough, etc.
Link Posted: 12/31/2005 1:51:43 PM EDT
I first tried mounting mine in between my A3 upper and the rail of my flat-topped forend, which seems to be the popular configuration. It never seemed to fit 100%, and when I came across it laying on the ground one day when I was out plinking, I decided to mount it on the rail of the flat-topped forend only. Seems more solid. Remember to check the tightness of the thumb screw once in a while.
Link Posted: 12/31/2005 2:12:09 PM EDT
Flat on my CMT upper.

I suppose there will be one guy in particular along shortly with pics of his EOTech not sitting right, though.

WIZZO
Link Posted: 12/31/2005 3:38:59 PM EDT
Tried it on two other uppers; a bit flatter on one, but still unsettling.

It definitely does not line up with the Larue forend, and is more offset the farther forward it sits.

Does the Larue Eotech mount help??
Link Posted: 1/1/2006 7:46:35 AM EDT
My Eotech sits a bit canted on my Bushmaster A3 upper.
Noticeable, but not an issue in terms of functionality.
Link Posted: 1/1/2006 8:55:01 AM EDT
Link Posted: 1/1/2006 10:21:28 AM EDT
Originally Posted By Geohans:
Tried it on two other uppers; a bit flatter on one, but still unsettling.

It definitely does not line up with the Larue forend, and is more offset the farther forward it sits.

Does the Larue Eotech mount help?? [q]

I bought an Eotech/Larue combo from G&R Tactical a couple of weeks ago and mounted it on my Bushmaster A3. After reading a post last week from someone who had problems with his Eotech mounting at an angle I got mine back out and gave it a serious eyeball. I can detect no problem. Basically, you have to have a flat rail and a flat Eotech base. I don't know that a flat Larue on a canted rail or any combination of only 2 in spec out of 3 elements will work. I would think that the higher an Eotech is off a bad rail the worse the perception would be, so adding a Larue would only magnify the problem (my guess). I suppose I could take my Eotech off the Larue and check, but if it ain't broke........

Easiest might be to find another A3 and try your Eotech on it.
Link Posted: 1/2/2006 6:13:12 PM EDT
[Last Edit: 1/2/2006 6:14:26 PM EDT by choppahead]
My Eotech also sat slightly canted to the left when using the knurled slotted screw. It also popped right off the rifle once hock.gif Luckily I caught it. I found that if I used the socket head screw and torqued the shit out of it while applying pressuer down and to the right, that it solved the problem. It appeared that the problem was with the Eotech as I tried it on rails by three different manufacturers and had the same results. I,m still not 100% satisfied with the ammount of engagement on the rail. But with a little blue loc-tite on the threads I feel it isn't going any where.
I hope this helps.
Link Posted: 1/4/2006 9:45:47 PM EDT
BTT
Link Posted: 1/4/2006 10:02:01 PM EDT
mine sits straight...like an arrow
Link Posted: 1/5/2006 10:30:04 AM EDT
Has anyone got detailed instructions for doing what boom suggested? Maybe a diagram even, or is it a fool proof job with nothing that can be irreparably damaged?
Link Posted: 1/5/2006 10:35:10 AM EDT
Do a search on this subject, I read a post on this about 2 or 3 weeks ago, and EOtech replied to this!
Link Posted: 1/5/2006 10:39:54 AM EDT
I'm severely search impaired I can never seem to find a damn thing, will try, but will probably be back with more questions than I left with originally.
Link Posted: 1/5/2006 11:13:42 AM EDT
Has anyone ever been able to find any correlation between the complaints and a certain series of serial numbers, or is it a random phenomenon?
Link Posted: 1/6/2006 5:57:33 AM EDT
.
Link Posted: 1/6/2006 4:34:26 PM EDT
[Last Edit: 1/6/2006 4:36:01 PM EDT by Manx]

Originally Posted By choppahead:
My Eotech also sat slightly canted to the left when using the knurled slotted screw. It also popped right off the rifle once Luckily I caught it. I found that if I used the socket head screw and torqued the shit out of it while applying pressuer down and to the right, that it solved the problem. It appeared that the problem was with the Eotech as I tried it on rails by three different manufacturers and had the same results. I,m still not 100% satisfied with the ammount of engagement on the rail. But with a little blue loc-tite on the threads I feel it isn't going any where.
I hope this helps.



It sounds like your Weaver lock was upside down or out of spec. The Weaver lock is the part of the EOTech that the screw goes into to form a clamp on the rail. EOTech advises against over torquing the screw (it could break) or using LockTite. Contact Dennis Finnegan (EOTech customer service) at dfinnegan@eotech-inc.com He'll fix you right up.

For anyone else who has a leaning EOTech: Check your rail specs against this diagram www.biggerhammer.net/picatinny/
EOTech's are designed to fit rails machined within government spec. If your rail is out of spec, the sight can lean. I've encountered rails from various rifle manufacturers that did not meet the tolerances of this spec, but I've never encountered an out-of-spec EOTech. The other cause could be the Weaver lock as mentioned above.
Link Posted: 1/6/2006 5:52:38 PM EDT
[Last Edit: 1/7/2006 3:11:06 PM EDT by choppahead]

Originally Posted By Manx:

Originally Posted By choppahead:
My Eotech also sat slightly canted to the left when using the knurled slotted screw. It also popped right off the rifle once hock.gif Luckily I caught it. I found that if I used the socket head screw and torqued the shit out of it while applying pressuer down and to the right, that it solved the problem. It appeared that the problem was with the Eotech as I tried it on rails by three different manufacturers and had the same results. I,m still not 100% satisfied with the ammount of engagement on the rail. But with a little blue loc-tite on the threads I feel it isn't going any where.
I hope this helps.



It sounds like your Weaver lock was upside down or out of spec. The Weaver lock is the part of the EOTech that the screw goes into to form a clamp on the rail. EOTech advises against over torquing the screw (it could break) or using LockTite. Contact Dennis Finnegan (EOTech customer service) at dfinnegan@eotech-inc.com He'll fix you right up.

For anyone else who has a leaning EOTech: Check your rail specs against this diagram www.biggerhammer.net/picatinny/
EOTech's are designed to fit rails machined within government spec. If your rail is out of spec, the sight can lean. I've encountered rails from various rifle manufacturers that did not meet the tolerances of this spec, but I've never encountered an out-of-spec EOTech. The other cause could be the Weaver lock as mentioned above.



Does EOTech advise against installing purchacing sights with upside down or out of spec Weaver lock's?
Link Posted: 1/6/2006 7:26:25 PM EDT
Link Posted: 1/7/2006 10:48:22 AM EDT
[Last Edit: 1/8/2006 6:16:18 PM EDT by SanduneCC]
My 552 leans left and seems to get worse when moved towards the rear.

Link Posted: 1/7/2006 10:50:22 AM EDT
[Last Edit: 1/8/2006 6:15:14 PM EDT by SanduneCC]
.
Link Posted: 1/7/2006 10:51:44 AM EDT
[Last Edit: 1/8/2006 6:14:59 PM EDT by SanduneCC]
.
Link Posted: 1/7/2006 10:52:39 AM EDT
[Last Edit: 1/8/2006 6:14:42 PM EDT by SanduneCC]
.
Link Posted: 1/7/2006 10:59:56 AM EDT
[Last Edit: 1/8/2006 6:14:28 PM EDT by SanduneCC]
.
Link Posted: 1/8/2006 6:42:23 AM EDT
My old 511(c) on a model 1 Flattop- NO!

My new 511(F) on an ASA flattop-Perfect.
Link Posted: 1/8/2006 7:12:36 PM EDT
tag, interested in this myself.
Link Posted: 1/20/2006 5:46:14 PM EDT

Originally Posted By choppahead:
My Eotech also sat slightly canted to the left when using the knurled slotted screw. It also popped right off the rifle once Luckily I caught it. I found that if I used the socket head screw and torqued the shit out of it while applying pressuer down and to the right, that it solved the problem. It appeared that the problem was with the Eotech as I tried it on rails by three different manufacturers and had the same results. I,m still not 100% satisfied with the ammount of engagement on the rail. But with a little blue loc-tite on the threads I feel it isn't going any where.
I hope this helps.



Just purchaced another 552 for my new AK. Tried it on my Bushmaster and it sits flush. So apparently the problem was with the EOTech and not the rail being out of spec. At least in my case.
Link Posted: 1/21/2006 5:43:27 AM EDT
Yes it does.
Link Posted: 1/21/2006 9:10:28 AM EDT
Yes it sits square.
Link Posted: 1/22/2006 9:18:01 AM EDT
My 552 sits titled as well. No matter how much I play with it it will be canted. Havent had a problem with zero though.
Link Posted: 1/24/2006 12:03:19 PM EDT
tag
Link Posted: 1/24/2006 12:49:32 PM EDT
[Last Edit: 1/24/2006 12:50:26 PM EDT by Stickman]
Sadly, I just found out I've got an issue with mine....

The problem isn't the cant, the problem is that it isn't locking down the way it is supposed to. I wouldn't care if it were a range toy, but this is for duty use.
Link Posted: 1/24/2006 2:29:07 PM EDT
[Last Edit: 1/24/2006 2:30:41 PM EDT by INTrooper4255]

Originally Posted By Stickman:
Sadly, I just found out I've got an issue with mine....

The problem isn't the cant, the problem is that it isn't locking down the way it is supposed to. I wouldn't care if it were a range toy, but this is for duty use.



Now, you know, EOTech has never produced a bad product so this is going to be YOUR fault or YOUR RIFLE'S fault in some way!

Also, don't come on this site and try to say that EOTech has made a bad product, because there are those out there right now that are getting their cup of EOTech Cool Aid poured as we speak.

Good luck with it. I hope that you have better luck with them than I did!
Link Posted: 1/24/2006 3:52:38 PM EDT
I have two 552s and they are the new ones with the lever and they sit tilted on my Bushmasters as well. Gave up and went Aimpoint which sits flush flat now on my Knights rail. Sent it to Eotech and got another one- same problem with tilting just different day.
Link Posted: 1/24/2006 4:34:04 PM EDT

Originally Posted By Esq1118:
I have two 552s and they are the new ones with the lever and they sit tilted on my Bushmasters as well. Gave up and went Aimpoint which sits flush flat now on my Knights rail. Sent it to Eotech and got another one- same problem with tilting just different day.



I know what you mean, but EOTech says that ALL of the leaning problem is with receivers being out of spec, NOT their sights. Funny, my sight has sat tilted on EVERY rail that I have placed it on and EVERY rifle that I have placed it on. Future Aimpoint owner here also. Another trooper just purchased a Rock River M4Gery and he was talking about buying an EOTech. I have changed that, he is going to purchase an Aimpoint now. If I can get just a few people a year that I come into contact with to buy anything other than and EOTech, I'm happy.
Link Posted: 1/24/2006 7:14:36 PM EDT
Mine's slightly canted on three different guns. Since for me it's just range gizmo, it doesn't affect the function at all and I'm actually quite happy with the site.

However, for what these things cost, they should be perfect.
Link Posted: 1/24/2006 7:21:49 PM EDT

Originally Posted By SWS:
However, for what these things cost, they should be perfect.



You hit the nail right on the head!
Link Posted: 1/25/2006 10:48:07 AM EDT
[Last Edit: 1/25/2006 10:48:57 AM EDT by Stickman]
I haven't called them yet, we will see what happens, and I'll comment back here when I do with either good or bad results.

ETA- Eotech has been a good company to deal with each time I've have talked to them, I see no reason why it should be different now.
Link Posted: 1/25/2006 11:20:51 AM EDT
Link Posted: 1/25/2006 12:02:26 PM EDT
I have used mine on a Colt, CMT, Mega, and OA. The only one it fits on is OA.....

This Eotech also won't mount on my rails.
Link Posted: 1/25/2006 1:26:45 PM EDT
Yes, my Eotech 552 is canted. Looking down the sight, it is canted slightly to the right.

I picked it up used from the EE. Previous owner said it was never shot, and it was in good shape. The lean is very slight however, maybe half a degree, so I live with it. I also purchased a GG&G accucam, and it didn't fix the problem.
Link Posted: 1/25/2006 7:53:39 PM EDT
[Last Edit: 1/25/2006 7:55:14 PM EDT by INTrooper4255]

Originally Posted By C4iGrant:

Originally Posted By INTrooper4255:

Originally Posted By SWS:
However, for what these things cost, they should be perfect.



You hit the nail right on the head!



As I said before and will say again, it could be your receiver that is slightly off.



C4



It's not, my EOTech is with an engineer/gunsmith as we speak trying to get it to sit correct on my YHM riser. He thinks that the sight is going to have to be shimmed or the rail milled to get it to work!

I just love how you guys think that it is the rifle when you have had neither in your hands to examine them.
Link Posted: 1/26/2006 3:41:56 AM EDT
My old 552 sat flush on my Model 1 upper.

My new 511 sits flush on the same gun.

Good luck getting your problems resolved.
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