Holosun HM3X 3X Magnifier

Manufactured by Holosun
Manufactured by Holosun
19 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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The Holosun HM3X Magnifier is a great affordable option for stretching the legs on your Holosun red dot sight. This 3X Red Dot Magnifier features an adjustable diopter ring to dial in your focus and the generous eye relief means you will be quick on target. Included with this 3X magnifier is a quick detach mount with a spacer allowing you to line up with absolute and lower 1/3rd red dot mounts. The durable aluminum housing is made to the same standards as their red dot sights, so you know it will last. The flip to side design is quick to use allowing you to seamlessly transition between 1x and 3x. Improve the capabilities of your red dot optic with the Holosun HM3X Magnifier.

  • Adjustable diopter dial
  • Aluminum housing with matte black finish
  • Flip to the side design
  • Compatible with absolute and lower 1/3 height optics
  • QD mount and spacer included
  • IP67 certified water and dust proof

Holosun Technologies is committed to creating innovative optic, laser/IR technologies for a broad range of shooting, hunting, law enforcement, and military needs. Using quality manufacturing standards, they provide military grade optics without the military grade price.
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Exit Pupil Diameter.29 mm
Eye Relief2.75 in.
Field View 10037.50 ft
Mount Compatibility
Weight9.8 oz.
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

19 reviews




love it work great with my HS510

Buyer Beware

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Morons at Holosun have put perma loctite on the screws that you have to remove to add the riser spacer or to flip around for left handed shooters. Stripped both the supplied tool and one of my nice torx bits. Screws are like concrete. Called Halosun, this is a known issue from their Chinese factory. The offered for me to return it and have a replacement shipped out. It has been 14 days since they received the package and I still have not had a replacement magnifier shipped out. Customer service is good on the front end but as soon as you ask for a status your shut down. After two days of emailing them twice a day I finally got a response saying it could be another 5-7 days. I’m sorry it should not take that long to ship out a replacement. This has left a very bad taste in my mouth for them. I should have done more research. Every 5th review on Amazon is someone complaining about stripping the same screws.

It was good to speak to you on this issue and we are happy that Holosun resolved this for you. Please let us know if there is anything else we may help you with.


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Mounted behind HS403C. Enough rail space left for folding rear sight. Great clarity with good field of view. Lower 1/3rd spacer easy to install. Easy to center the dot. Dot remains crisp. Lefty shooter, so I flipped it around so it flips to the bolt release side instead of ejection port side. Did a couple drills, maybe 90 rounds - not much, but no issues. I own 3 Holosun products, all great.

Takes the red-dot in front to a new level!

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A year ago I had never looked through a red-dot sight. I have been a scope sights guy for many years.
All that's out the window as I've gone red-dot crazy. This is my first magnifier and I have it mated with Holosun 510 on an 18" 223WYLDE upper. Be flying high hosing hawgs with it tilted over. Be sitting in the blinds with it on duty!

What a improvement

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Holosun just showed me what the difference is between quality vs budget magnifier. Great QD mount fantastic glass quality material and workmanship.

Best glass you can get for the $

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This is the nicest quality magnifier you can get for a couple hundred bucks. Magnifiers 2X the price don't have any justification for the price point. Very nice frame, mount, and crystal clear glass.

Holosun magnifier

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Quality built and very clear glass. Love the mount and ease of use. Really a great product and Ill definitely buy another one

Great Magnifier

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Great magnifier and mount. Easy to adjust and excellent eye relief. While I can't compare to "high dollar" magnifiers, the glass looks very clear. I added it to my Holosun Paralow HS503G Red Dot Sight - ACSS CQB Reticle (which is the best optic for the money) I prefer the Holosun pairing better than the Sig Sauer Romeo setup.

Great quality for the price


I'm currently running this magnifier with my Aimpoint Pro. The magnifier is clear and functions without any issues.

Only had it 2 months, but so far is awesome.

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Only been to the range with it a couple of times. So far it is awesome. Especially for the price. Really clear glass, easy to set up, adjustments are all easy and precise. The flip to side mechanism is just right, not too stiff and not too loose. Hopefully that doesn’t wear out and become looser over time, but I think the tension screw prevents that.
Highly recommend!