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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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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

Bang for buck, can’t ask for better

by Hank, from CA, United States Written on October 4, 2025
This sight combined with the AEMS is a dream. Even as a taller guy, with a simple riser my eye relief problem was solved, this game
Pros:
  • Price
  • Durabilaty
Cons:
  • eye box
Best Used for:
  • Holosun products
Would recommend: Yes
Was it helpful to you? Yes | No

Works great for my bad eyes

by BigRobbie, Verified Owner from NJ, United States Written on October 4, 2025
I love it for my CZ Scorpion and I paired it with the Holosun 512T optic. Makes shooting at and past 25 yards a breeze.
Would recommend: Yes
Was it helpful to you? Yes | No

Works as intended

by Patrick, Verified Owner from SC, United States Written on September 19, 2025
It's a 3x magnifier and it works. Say what you want, feel how you want to feel about Holoson but it's solid, had zero issues with fitment on my rail. Works perfectly with my green dot (Holoson). If you want something built well and reliable that won't unnecessarily break the bank get the Holoson.
Pros:
  • Cost & availability
  • Color and design
  • Shipped and arrived fast
  • Fitment & function
Cons:
  • None
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Best "bang for your buck"

by Charles Chapman, Verified Owner from NH, United States Written on September 16, 2025
I purchased 2 of these magnifiers, with lots of contemplation about spending much more money on an eotech or trijicon model. My concern was with adaptability and clarity, as well as toughness. I have an Eotech xps2 holographic sight and Trijicon MRO sight currently, but I wanted something versatile enough to do basically any sight I purchased. Im happy to report that this sight very easy works with either sight, is very clear, has a solid build that looks tough, and is compact enough to fit comfortably to any ar style setup. If you have an eotech or red dot without a magnifier, please please find a way to purchase one of these magnifiers. Not only does it magnify the sight really well, giving you much more capability, but it also seems to make the reticle more clear to get a better sight picture. The blurryness goes away and its very easy to fold the magnifier out of the way to go back to x1 zoom. Buy a few of these magnifiers instead of spending x3 the money on an expensive one. Once you have a few of these then you can try an upgrade and see if its significantly better but these will for sure get you through any situation at a fraction of the cost.
Pros:
  • Clear
  • Easy to use & operate
  • Cheap / good quality
Cons:
  • None
Best Used for:
  • red dot applications
Would recommend: Yes
Was it helpful to you? Yes | No
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