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Holosun HM3X 3x Red Dot Sight Magnifier
$235.28 $199.99 Save 15%
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Expert Review

Great glass for a reasonable price

by Julia, Gear Expert from IL, United States Written on December 15, 2020
I've had this mounted for about a year now and really like it. Pairs well with a red dot for longer shots as well as for target identification for people with relatively poor vision like myself. Seems very durable, and I haven't had any issues with the glass not staying put in either the upright or down position- looks into place nicely, the eye relief is generous, and the glass is exceptionally clear.
Most Helpful Positive Review Eotech magnifier level of clear
this thing is so clear. bought it at my ffl dealer shop when I was picking up my aero a4 lower and saw this beauty for 199. I asked him if I could take a look at it and he told me he had just put it on display a half hour ago. I jumped all over it. it is slightly larger than an eotech magnifier but...
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Most Helpful Negative Review Bad luck with mine.
Good eye relief and the clarity was fine for the price, until two large black flakes appeared on different strata of the internal lenses--enough to blur the view at the center. Not subjected to any severe recoil or rough handling, maybe 1k rounds of 5.56 from a bench before the issue became apparen...
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Great company and products

by JDC, Verified Owner from AL, United States Written on July 30, 2026
From the initial search until the product landing on my doorstep; great service. OP is a great company to do business with. The magnifier is excellent. Clear glass, nice fold great company.
Would recommend: Yes
Was it helpful to you? Yes | No

first time magnifier

by superbee, Verified Owner from ND, United States Written on July 19, 2026
Exceeds my expectations and made my sight much more clear. Highly recommended.
Would recommend: Yes
Was it helpful to you? Yes | No

dang good magnifier without breaking the bank.

by some random idiot, Verified Owner from GA, United States Written on July 5, 2026
Pretty much what the title says. It's a dang good magnifier without paying a ton and the flip mount is great.
Would recommend: Yes
Was it helpful to you? Yes | No

Holosun magnifier 3x

by first time shooter, Verified Owner from MD, United States Written on June 22, 2026
Exactly what I needed, exactly what I expected, great product.
Pros:
  • Very good glass quality
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Exactly as described

by Sal, Verified Owner from TX, United States Written on March 7, 2026
Wanted a 3x to help with accuracy at longer distance. Good quality. Comes with mount and additional riser if needed. Perfect height alignment with a Sig Romeo5. Easy to flip off to the side if not needed. Body is a little longer than I wanted, but the benefit is that I have a better eye relief. Overall, very satisfied. It does what I wanted it for.
Would recommend: Yes
Was it helpful to you? Yes | No

Works with Eotech

by Jags, Verified Owner from PA, United States Written on March 3, 2026
Years ago I got rid of my magnifier for my 512 eotech and regretted it. But glad to see I don't have to pay $500+ for another one. The holosun is just as clear as the eotech one. I have my 512 Holo on a unity fast Mount riser and I got an off brand FTC for this holosun both work great together, only downside is not the Holosun itself but the FTC (doesn't fully go below the center line).
Pros:
  • cheaper than an eotech one
Cons:
  • seems to have a smaller eye box
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect match and must have for any rifle mounted holosun, IMO

by Sooty, Verified Owner from IN, United States Written on February 21, 2026
Got 2 of these now with my holosun rifle dots. They're clear, crisp, and add a ton of down range functionality to my rifles. Sub $500 for this and any quality Holosun red dot makes for a fairly cheap setup for any AR pistol setup. Makes the whole process of getting an AR pistol so much easier to get into.
Would recommend: Yes
Was it helpful to you? Yes | No

Solid Magnifier

by Raymond, Verified Owner from MI, United States Written on January 30, 2026
Bought for full price unfortunately, The day after I bought it on Optics Planet it went on sale for $150 on PSA, so sad day. BUT, great magnifier for the price. It feels incredibly sturdy and the picture is really crisp. All the reviews I read online and watched weren't lying about the clarity and eye relief on this thing. And it has great co-witness with their holosun 510c optic. Those two go absolutely great together. I Haven't had a chance to run this in a comp yet but im excited to. If anything goes wrong ill come back here and make sure everyone knows about it lol. But aside from that its great, these also keep their value pretty good if you plan to upgrade a few years down the road. These magnifiers sell like crazy used for like 70% of MSRP, so overall decent investment. Great Magnifier Holosun!
Pros:
  • light
  • Sturdy
  • eye relief
  • Clear
Cons:
  • None
Best Used for:
  • competition
  • Distance
Would recommend: Yes
Was it helpful to you? Yes | No

Liked it so much, had to get 2!

by Chuck, Verified Owner from TX, United States Written on January 24, 2026
Fantastic paired with Holosun optics! It’s almost like they were meant to be together! Lol. Liked this so much that I got one for my new rifle too!
Pros:
  • Everything
Cons:
  • none so far
Best Used for:
  • Rifles
Would recommend: Yes
Was it helpful to you? Yes | No

A magnifier that works

by Dan, Verified Owner from AZ, United States Written on October 20, 2025
I have an Aimpoint Duty RDS on my rifle and I just wanted to extend that visual out a little bit and this magnifier works perfectly. I love the quick release, and the adjustment tool built into the mount itself which really helps. I was able to get dialed in super quick and now I am zeroed further out than 50 meters. Covers keep the lenses clean and free of debris. I am very happy with this purchase.
Pros:
  • easy to use
  • Quick install & removal
Cons:
  • None
Best Used for:
  • rifle
Would recommend: Yes
Was it helpful to you? Yes | No
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Last updated 2025-11-12 UTC.