I am thinking about running a magnifier behind my EOTech.
Im looking for pics and want to know if it will clear a BUIS and how far forward the EOTech must be mounted to leave room for the magnifier
I am thinking about running a magnifier behind my EOTech.
Im looking for pics and want to know if it will clear a BUIS and how far forward the EOTech must be mounted to leave room for the magnifier
I have got to ask the question so please do not take this the wrong way ok.
Why spend you money on this 3x optic?
Lets think this through ok. On a CCO like a EOTech or even a AimPoint these optics are zero’ed some were between 25yds and 300yds. Within these ranges these optics are designed for fast acquisition sighting on a target. Shooting at human, or a E-Type target these optics come in to there own.
Since the type of ZERO these optics are set at, and a lack of the ability for a hold point on most of these reticles I do not think there is a real need for these. 3x optics.
If you need one, go get a ACOG, A Short Dot, Accu Point 1.25-4x, IOR 1.1-4x26, IOR 3x25. These optics have a reticle you can use for longer ranges than jst the ZERO setting. Yes I know you can do holds with a CCO but you can do that without a 3x it’s not like a 3x will help doing holds. If I am getting a magnification optic, I want a reticle that will advance the usage of the magnification; not my ability to just see the target.
The use of these 3x’s is not the most practical option. The 3x will not improve your downrange groupings, or let you use your BUIS systems.
I think for the money there are better sights for a total of $800. I would just go get a IOR 1.1-4x26 or a Millett 1-4x24 DMS and be done with it.
IF you went with a Millett 1-4x24 DMS and a mount you are at the same price point and a optic that will work for the need you have.
John
I dont have the money to totally switch out optics and I already have an EOTech
AFA the rest, I tried the ACOG, didnt like it, and Ill see if the rest is my opinion well when I get this
AFA the BUIS, i realize it will be under the optic so un-useable unless i take the magnifier off, thats fine IMO just need to know if a BUIS will fit under the magnifer w/o issue
Roger that,
I just waned to give a diffrent point of view.
Have a good one.
John
from my experience the buis will NOT fit under the 3x from eotech. unless you are running a Vltor full top rail. but the the front and rear sight dont clear the eotech. hope this helps
The EO tech 3x will flip over troy rear buis and I would assume others however the 3x must be flipped to the side or removed to engage the rear buis. Due to the 3x eye relief you will most likely want to mount it as far rear ward as possible, basically right in front of the rear buis. Another nice feature is that the flip mount is ambitextrous and can be mounted to flip right or left however it would be nice if the adjstment screws were a little more heavy duty. I have been running this setup for several months and the 3x will allow taregt identification and more precise target engagement at further distances if you have a need for that.
Am EoTech + Aimpoint 3x mag on a Larue pivot mount, is the best thing since … (insert witty noun here)!
The red dot is always available, with the pivot flipped to the side, esp. close & fast when you really need it.
Should the situation dictate; further out, better ID req’d, whatever… & you have time you can go to 3x pretty fast, even while running at full tilt…
And, if you know you’ll just be in & out of structures, just flip lever off the 3x for a wee less bulk.
I switched out a Short Dot for this combo.
Here are some LT configurations…

I use the configuration, not recommended, shown in the very bottom w/o a problem. EoTech with flip behind it.
Except I have the flip & eotech forward enough to use a buis.
There is an adjust on the aimpoint 3x to center the reticle.
I have used both magnifiers and find the Aimpoint glass to be a good bit better than the Eotech magnifier. The Eotech magnifier (3x version) was not impressive to me. I would go with the Aimpoint 3x in a Larue FTS mount no matter which optic I was using.
Concur fully with M4Guru’s comments: the Aimpoint 3x magnifier appears to offer much higher quality glass than the EOTECH magnifier. Like Dano5326, the 3x magnifier in a LaRue mount behind a red-dot optic offers a very versatile set-up.


Does anyone make a flip to side mount for the eotech 3x? I have the fixed mount on mine but am considering the other.
DocGKR’s set-up uses a LT-649 I believe…
Since everyone on this thread has experience with or an interest in sights with magnifiers I have a question:
I’m using a S&W M&P 15T with an EoTech 553, an Aimpoint 3X magnifier and a LaRue tip0ff mount. The height of the LaRue mount give a very close co-witness behind the EoTech and a one-third co-witness for the BUIS.
My observations (and here is where I need your input) are as follows:
a. The 3X magnifier aids in target contrast and in placing the reticle where you want the shot. Down range accuracy for precision shooting is improved, as much as 3X and a crude reticle can be improved.
b. However…using the 3X magnifier seems to require as much care in head placement (aka cheekweld) as does a more traditional scope. I found that as my head moved behind the magnifier, the reticle would change shape and size, and had a negative effect on accuracy. When care was taken with cheekweld the dot stayed a consistent shape and size and my accuracy was very good. Without the magnifier, the reticle never changed shape and size and therefore head position never seemed to affect accuracy.
c. The LaRue tipoff mount is a terrific piece of kit and provides a significant degree of flexibility regardless of whether or not a magnifier is used.
d. I was originally inclined to buy the Leupold CQB, liking it variable power feature that appeared to combine the advantages of both the EoTech and the magnifier. But my familiarity with the EoTech and comfort with its reticle and controls won out in the end.
Keith
The thing I don’t like about the variable scopes is that your eye relief needs to be right on for it too look right, where as the Eotech, (without the magnifier behind it) head placement and eye relief don’t matter.
I just swiched to a 553 Eotech and am haveing a hard time getting used to the lower 1/3 co-witness, will I get used to it, or does lower 1/3 suck?
Wow, lots of info!
Thanks guys! ![]()
Eotech makes one here is a photo of one in use:

I have a 1.1-4X variable optic on my AR and have seen an Eotech 4X at a shop, I have to say I liked it. The Aimpoint or Eotech with the magnifier really seems to be the best of all worlds for CQB out to mid range. Although I don’t think I’d run the tip off mount on the magnifier.
I’m always interested in what you guys think that have gone down this path.
Whats the best way to mount the Eotech 557 with the 4x Magnifier behind it in a pivot configuration? I want to use Larue mounts so will one of the mounting options above work since the 557 is a bit higher. Thanks
HotRod
You can not use a LaRue Aimpoint magnifier mount on an EOTech 4x magnifier. the 4x magnifier has a picatinny style edge on the bottom where the ARMS mount on the EOTech/Samson mount lock into. that is unless Mark design a mount with the throw lever that can attach and detach the magnifier.



Note the mounting solution that EOTech chose to secure the 4x.
M4Guru like the Aimpoint magnifier where I found the EOTech 3x to have a better clarity. got to be the slanted eyes…![]()

The EOTech 3x magnifier has a larger front obj, which tend to gather more light for me. but the down side is the weight. EOTech 3x tend to be heavier.