Enjoy free shipping during the holidays! Shop now and get
Free Value Shipping
on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.
Enjoy Our Extended FREE RETURNS
We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended
Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended
return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later).
We'll even cover the cost of return shipping. Learn more about our
Return Policy.
Please Enable Your Browser's Cookies Functionality
Cookies are not currently enabled in your browser, and due to this the functionality of our site will be severely restricted.
Web browser based cookies allow us to customize our site for you, save items in your cart,
and provide you with a great experience when shopping OpticsPlanet.
Your privacy is important to us, and any personal information you supply to us is kept strictly confidential.
If you cannot enable cookies in your browser, please contact us — we are always here to help!
JavaScript is blocked by AdBlocker or ScriptBlocker
We're sorry - it looks like some elements of OpticsPlanet are being disabled by your AdBlocker.
Unfortunately we are unable to offer our excellent shopping experience without JavaScript.
Please add "opticsplanet.com" and "https://opl.0ps.us/assets-92e0ad4e138/" to whitelist,
or disable AdBlocker for this site (please note that we do NOT feature any annoying ads on this website).
Thanks!
Your Browser is Outdated
Unfortunately, we are unable to provide an excellent shopping experience on your browser because it lacks modern functionality needed for us
to provide a fast, secure, and enjoyable experience. If you cannot upgrade your browser or use an alternative device to visit us,
please contact us at +1-800-504-5897 and we'll be happy to assist you over the phone!
Reviews & Ratings for Primary Arms SLx 3x Long Eye Relief Magnifier
— 5 reviews — Page 1
This was light, compact, bright, and my 1 moa dot was sharp. The eye relief was far better than others I tried. I paired this with my EOTECH xps2 and a PA QD flip mount. I was extremely happy - plenty of rail space to include my buis. Solid locking mount and no wobble.
Magnifier looks good. .. but needs Primary Arms mount. The swing away mount is WAY too high (like International Space Station High) given the eye relief and the bolt on rails for 30 carbine and Mini 14/30 (the rifles I'm using this on). Much better is the Vortex VMX-3T magnifier, that has an integr...
Read More...
by
petok,
Verified Owner
from GA, United States
Written on March 4, 2020
I purchased this magnifier having used Primary Arms optics in the past without any issues, but this one didn't cut it. When you adjust the field of view to center your red dot the top of the field of view gets cut off and the image is no longer a perfect circle. This is not part of the red dot sight blocking the view because the chopped portion is still present when you look through the magnifier without anything in front of it. I contacted Primary Arms and told them my problem and we checked all potential variables (mount, height, allotment, etc.) before sending it to them to inspect and replace. They sent me a new one with a different serial number and it did the exact same thing. This was unfortunate because the price is great and the glass is clear, but having the image chopped at the top is unacceptable. I will be returning the magnifier and trying a different brand.
Pros:
cost
Sturdy
Cons:
field of view
Would recommend: No
0 of 1 found the following review helpful.
Was it helpful to you?Yes|No
You said this review was not helpful.
Would you like to change your vote?
by
Old Nam Vet,
from AL, United States
Written on April 30, 2018
LOOK no further than this Primary Arms Long Eye Relief Magnifier in 3x. Easily adjust vertical and horizontal to fit the glass on the combined red dot. Mated this to a American Defense Flip Mount in Absolute on an 8 inch SBR 300BO. Sight picture is sharp and no edges. The best feature overall is the LONG eye relief vs. the typical competition models. I can almost keep my same cheek weld on the stock vs. moving my face way up to find a proper sight picture. Good job PA and super shipping from OpticsPlanet.
Pros:
Almost Perfect Eye Relief
Cons:
Perhaps outside metal skin could have been made rougher for ease of movement?
Best Used for:
medium range shooting
Would recommend: Yes
4 of 4 found the following review helpful.
Was it helpful to you?Yes|No
You said this review was not helpful.
Would you like to change your vote?
by
Alex Ivanov,
from WA, United States
Written on March 19, 2018
This is my first magnifier so I have nothing to compare to. Anyway it's easy to install and works well. Picture is clear and bright. Don't forget to follow all steps from installation manual precisely.
Would recommend: Yes
2 of 3 found the following review helpful.
Was it helpful to you?Yes|No
You said this review was not helpful.
Would you like to change your vote?