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Holosun HM3XT Magnifier Review: Extra Range In A Hurry preview image
Sep 01 2023
7 min read

Holosun HM3XT Magnifier Review: Extra Range In A Hurry


Red dot and reflex sights are more popular than ever; chances are, you likely have one or more yourself. Especially when they are mounted on a rifle such as an AR-15, you may want to shoot targets farther than is ideal for a 1x magnification optic. That’s where magnifiers come in to save the day!

The Holosun HM3XT is a 3X magnifier that will give you that extra distance you want at the range with a simple flip. The titanium-bodied magnifier is compact and lightweight, but is it a worthy addition to your rifle or shotgun?

Keep reading to find out!

Holosun HM3XT Magnifier Review mounted on smith wesson volunteer xv pro
The HM3XT sits well above your iron sights when they are folded down.

Holosun HM3XT Review

Holosun HM3XT Magnifier


Eye Relief2.75 Inches
Field of View37 Feet at 100 Yards
Dimension3.2 x 1.8 x 2.5 Inches
Weight11.6 Ounces
Housing MaterialTitanium

Pros & Cons

  • Ambidextrous Flip-to-the-side design with adjustable tension 
  • Increased durability thanks to the Titanium housing
  • Quick-release mounting system
  • IP67 waterproof rating
  • Compact design
  • Affordable
  • Built-in flat driver tool
  • Clear glass/lenses
  • Scope shadow seems to sneak in quicker than some other magnifiers
  • This is nitpicky because it’s included and didn’t have to be, but the adjustment tool is so small that even sitting still in perfect conditions, it’s hard to use if you have larger-than-average hands

First Impressions

As I lifted the HM3XT out of its box, I was pleasantly surprised to feel just how light it was. Not that many magnifiers are heavy necessarily, but this one felt exceptionally light. It’s also very compact, especially when the diopter is not extended.

The finish had no blemishes, and the glass clarity seemed good from a quick glance through the magnifier.

Range Time

I mounted the HM3XT on my Smith and Wesson M&P Volunteer XV Pro behind a Holosun SCRS. I used the included mounting spacer to help align the two, which put the magnifier at the perfect height.

After adjusting the diopter and ensuring I was zeroed on my target(s) downrange, I let the ammo fly. I put six 30-round mags through the Volunteer XV Pro with the HM3XT mounted, running drills focusing on transitioning between targets that did and did not require the magnifier.

I was not gentle when flipping the magnifier to the side and back since every second counts in a real-world scenario where time is precious. I’m happy to report that it stayed secure and never accidentally flipped one way or the other.

One thing I do need to note, though, is there was a more than average amount of scope shadow as I shot while moving. Unless I stayed relatively motionless and focused on the same target, a shadow would arise at one spot or another around the perimeter of the lens.

I could have been moving too quickly or too much, but I have not had that same issue to the degree I did here on every other magnifier.


Quick Release Ambidextrous Flip-to-Side Mount

Holosun HM3XT Magnifier Review close up
I love a good quick-release mount.

I wish all mounts came with a quick release, and I’m surprised that more do not. Anyway, I found the mount to be sturdy yet easy to remove in a hurry. Once it was secured tightly, there didn’t seem to be any wiggle or play, even when repeatedly slamming the magnifier to the side and back.

There is no need to move the magnifier back and forth gently.

The mount is reversible, letting you decide which side you’d like it to flip to. Adding to its versatility is an included spacer that gives you that extra height if needed, depending on which optic you’re running in front of it.

Built-in Flat Driver Tool

I usually keep a few small tools in my range bag, including a flathead screwdriver. However, I don’t always have the same range bag with me, or when shooting at larger outdoor ranges, my bag may be in the truck and not by my side.

Holosun thought ahead for such scenarios and included a built-in flat driver tool. It stays neatly screwed into the mount until you need it. It’s tiny, though, so it’s not the easiest tool to use unless you have smaller hands.

Nonetheless, it’s better to have it than not.

Holosun HM3XT Magnifier Review close up controls
I can already tell that I’ll probably misplace the tool.

IP67 Rating

While an IP67 rating isn’t going to let you swim across the Atlantic with it submerged, it will allow you to shoot in the rain and not have to worry. Technically, it means it should be able to be fully submerged in fresh water for up to 30 minutes at a depth of one meter.

Holosun HM3XT Magnifier Review close up waterproof
In the rare event you ever drop your HM3XT in a puddle at the range, you can take your time retrieving it…well, as long as it’s not more than 30 minutes.

Clear Glass/Lenses

Holosun HM3XT Magnifier test view
Just bird watching in the distance…Okay, that’s a lie, but at least you get an idea of the clarity.

I’ve used quite a few magnifiers in my day, and let me tell you, they are not all the same when it comes to clarity. I’ll be honest: I don’t know the exact type of glass that Holosun uses with the HM3XT, but I can tell you once you adjust the diopter to be in focus, the glass/lenses look extremely clear.

I have nothing to complain about when it comes to the clarity once it’s in focus and steady.

Holosun HM3XT Magnifier settings
The diopter is adjustable to give you that perfect focus.




Another popular and affordable 3x magnifier is the JULIET3-MICRO. Similar to the HM3XT, it’s compact, waterproof rated (IPX-7), and has a similar field of view.

However, the JULIET3-MICRO utilizes a push-button flip-to-side mount and is constructed out of aluminum, two of the main differences compared to the HM3XT. Lastly, you can probably save around $100 if you look hard enough by going with the JULIET3-MICRO.

We reviewed the Sig Sauer Romeo5 & JULIET3 here if you want all the information.

EOTech G33

EOTECH G33 Magnifier

Have you ever heard the saying “buy once, cry once”? That applies here. You’ll pay significantly more than the other two magnifiers mentioned above, but you’ll get one of the most durable and proven magnifiers on the market.

The G33 is the only magnifier approved and under contract with USSOCOM. It shares many of the same features, such as an ambidextrous quick detach lever, 3x magnification, and an adjustable diopter.

It has fog-resistant internal optics, is water resistant to 33 feet, and can operate in temperatures between -40°F to 140°F. You will not need to worry about the durability ever.


While the Holosun HM3XT is not perfect, I think it’s a solid magnifier at a decent price. The pros outweigh the cons, and if you’re like me and like to have matching gear, it pairs wonderfully with a Holosun red/green dot.

If you’re in the market for a durable 3x magnifier that won’t break the bank, take a look at the Holosun HM3XT.

What is your favorite 3x magnifier? Let us know down in the comments!

Written by Ryan Domke
Ryan Domke photo Ryan Domke is a freelance writer, photographer, and social media consultant with a passion for guns and tactical gear. He works with some of the largest manufacturers in the firearms industry, allowing him the opportunity to continuously learn from and knowledge share with the 2A community. Ryan has contributed his writing expertise to numerous reputable publications, including, Cheaper Than Dirt, Springfield Armory's 'The Armory Life,' Smith & Wesson's 'The S&W Bench', and The Mag Shack. When he’s not spending time with his family, you’ll likely find him at the range or starting a new DIY project.


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