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Primary Arms SLx 3x Long Eye Relief Magnifier

Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD
Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD
Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD
Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD
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Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD
Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD
2 of 3 images
Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD
Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD
3 of 3 images
Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD

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Questions & Answers
Whats the FOV on this? Expert Answer

Primary Arms does not list a FOV specification, please contact them directly for further assistance.

by Jonathan D., Gear Expert, February 11, 2020
Can this magnifier be used with the primary arms Gen II 3X prism scope? I.E. will the magnification of each work together? Or not? Expert Answer

No, you can not magnify a magnified optic.

by Jonathan D., Gear Expert, June 21, 2019
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Nice magnifier by Alex Ivanov, 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.
2/3 found this helpful
Helpful Positive Review
Old Nam Vet by Old Nam Vet, 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 s...
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4/4 found this helpful
Helpful Positive Review
Awesome Magnifier by AP, Verified Owner, August 1, 2017
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 m...
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6/7 found this helpful
Helpful Negative Review
Without good mount worthless by Old Ranger Doc, May 19, 2017
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 ...
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1/31 found this helpful
Most Recent Reviews
Unacceptable field of view by petok, Verified Owner, 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 pe...
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0/1 found this helpful
Read All 5 Reviews

Product Discontinued by Manufacturer

Primary Arms SLx 3x Long Eye Relief Magnifier has been discontinued by Primary Arms and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Red Dot Sights & Accessories, Red Dot Sight Accessories, Red Dot Sight Magnifiers yourself to try and find the perfect replacement for you!

Product Info for Primary Arms SLx 3x Long Eye Relief Magnifier

Instantly amplify your current scope's magnification capabilities by mounting this Primary Arms SLx 3x Long Eye Relief Magnifier. Primary Arms designed these Red Dot Sight Magnifiers with over 3in of eye relief for maximum comfort while you take down distant targets with ease. The Primary Arms SLx 3X Long Eye Relief Optic Magnifier is ideal for use with red dot or holographic sights, and the easy-adjust azimuth and elevation adjustment turrets ensure you stay on target. Equip a Primary Arms SLx 3X LER Magnifier to enhance your precision at longer ranges.image

Features of Primary Arms SLx 3x Long Eye Relief Magnifier:

  • Eye relief of over 3 inches
  • Quick-adjust eyepiece
  • Easy-adjust azimuth and elevation adjustment turrets
  • Fits any industry-standard 30mm magnifier mount
  • Primary Arms Limited Lifetime Warranty

Package Contents:

  • Primary Arms SLx 3x Long Eye Relief Magnifier

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Primary Arms SLx 3x Long Eye Relief Magnifier Unavailable & Discontinued Models

List of Unorderable Models

  • Open Box Demo, Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD , MPN: OB-PA3XLER-AD , Code: 29R-RDM-3XLER-PA3XLER-AD-DEMO
  • Primary Arms SLx 3X Long Eye Relief Magnifier, Black, PA3XLER-AD , MPN: 510002 , UPC: 818500010982 , Code: 29R-RDM-3XLER-PA3XLER-AD
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Last updated 2026-09-11 UTC.