Holosun HM3X Review (2024) – Worth The Money?

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Welcome to my Holosun HM3X Review. I’ve had the opportunity to test the Holosun HM3X Magnifier extensively. 

I aim to share my insights and experiences with this intriguing piece of equipment. The HM3X has generated considerable buzz in the shooting community, and it’s time to delve into what makes this magnifier a topic of discussion. 

Whether you’re a professional marksman or an enthusiastic hobbyist, this review is crafted to provide a clear perspective on the Holosun HM3X.

Overview of Holosun HM3X Magnifier

The Holosun HM3X Magnifier enters the shooting arena as a promising tool, offering a fresh perspective on target acquisition.

 Its introduction to the market has stirred interest among shooters eager for innovation without breaking the bank. 

This magnifier doesn’t just aim to enhance your shooting experience; it seeks to redefine it. Its presence alongside a red dot optic hints at a synergy that could uplift your shooting precision and comfort.

Specification Table

Weight9.5 ounces
Eye Relief2.75 inches
Field of View37 feet at 100 yards
Overall Length4.01 inches (102mm)
Water ResistanceIP67 (Waterproof at 1 meter for 30 minutes)
GlassNitrogen Purged
Body MaterialAluminum
Mount TypeQuick Detach (QD) Mount

What’s in the box?

  • Holosun HM3X Magnifier
  • Quick Detach (QD) Mount
  • Spacer for Lower 1/3 Co-Witness
  • Built-in Screwdriver for Adjustments
  • User Manual

First Look & Impression

Upon unboxing the Holosun HM3X, its compact and robust design immediately catches the eye. The aluminum body feels sturdy, instilling a sense of durability. 

The included QD mount and spacer are thoughtful additions, reflecting the magnifier’s adaptability to various shooting styles. 

The initial interaction reveals a promising blend of functionality and simplicity, indicating that the HM3X could be a practical accessory for shooters looking to extend the capabilities of their red dot sights.

Who Should Get Holosun HM3X Magnifier

The Holosun HM3X is ideal for shooters who want to enhance their red dot system without a hefty investment. Its blend of essential features and affordability makes it a smart choice for those seeking to improve accuracy and range, particularly in mid-range shooting scenarios.

Features of Holosun HM3X Magnifier

1. Flip to the Side Design

The Flip the Side design of the Holosun HM3X is an innovative approach to magnification in shooting optics. This feature allows the shooter to quickly transition between magnified and un-magnified views without needing to detach the magnifier. 

It offers flexibility, ensuring that the shooter can adapt to various shooting scenarios, whether they require close-quarters engagement or long-range precision. 

The mechanics of this design are intended to be smooth and intuitive, allowing for quick and effortless flips to either side, depending on the user’s preference or tactical situation. This feature exemplifies a blend of convenience and functionality, offering shooters the versatility needed in dynamic environments.

My Testing

During my testing, I found the Flip to the Side mechanism to be a mixed bag. Initially, the flipping action was smooth, providing an effortless transition between magnified and non-magnified views. 

However, over time, I noticed that the flipping mechanism became looser, leading to unintended flips, especially under rapid movements or when the firearm was jostled. 

This decreased the reliability of the feature, as it required constant awareness to ensure the magnifier stayed in place.

2. QD (Quick Detach) Mount and Spacer

The Quick Detach Mount and Spacer are significant features of the HM3X, offering ease of installation and compatibility with various firearm setups. 

The QD mount allows for quick attachment and detachment of the magnifier, enabling shooters to efficiently switch between different firearms or remove the magnifier when it’s not needed. 

The spacer included is designed to align the magnifier with different height optics, particularly Absolute and Lower 1/3 Height Optics, ensuring a seamless and coherent sight picture.

My Testing

My experience with the QD Mount was initially promising. The mount attached easily and seemed secure. However, the locking mechanism of the QD mount felt somewhat insubstantial, lacking the robust click or confirmation I’ve felt with higher-end mounts. 

This raised concerns about its long-term durability and stability, especially in rugged use. The spacer’s functionality was adequate, aligning well with various optics, but the quality of the screws provided was questionable, as they showed signs of stripping during installation.

3. IP67 Certification and Durable Aluminum Housing

The IP67 certification denotes that the HM3X is dust-tight and can withstand immersion in water up to 1 meter deep for 30 minutes. This rating is crucial for outdoor use, especially in harsh weather conditions, ensuring that the magnifier remains functional and protected. 

The durable aluminum housing further reinforces this resilience, offering robust protection against impacts and the rigors of field use while maintaining a lightweight profile.

My Testing

During my field tests, the HM3X’s durability and weather resistance were put to the test. The aluminum housing held up well against minor impacts and rough handling, showing no significant signs of damage or wear. 

The IP67 rating was validated during a rainy outdoor shooting session, where the magnifier continued to function flawlessly despite exposure to water. This resilience is a significant plus for the HM3X, adding to its practicality in diverse shooting environments.

4. Glass Clarity and Eye Relief

Glass clarity is a pivotal aspect of any magnifier, dictating the quality of the sight picture. The HM3X boasts decent glass clarity, aiming to provide a clear and sharp image. Eye relief, the distance from the eyepiece at which the shooter can still see a full field of view, is another critical feature. 

The HM3X offers an eye relief of 2.75 inches, designed to accommodate various shooting styles and provide comfort during extended use.

My Testing

In my evaluation, the glass clarity of the HM3X was satisfactory for its price point. Targets were reasonably clear and sharp, aiding in accurate shot placement at mid-range distances. However, the eye box (the area where the shooter’s eye can be and still have a clear sight picture) was notably restrictive, presenting challenges in acquiring a comfortable and consistent cheek weld. 

This limitation was particularly noticeable in awkward shooting positions or when rapid target acquisition was necessary. Despite these drawbacks, the clarity of the glass remained one of the more positive aspects of the HM3X.

5. Durability and Wear Resistance

The Holosun HM3X Magnifier is designed with durability in mind, featuring an aluminum housing that should theoretically withstand the rigors of regular use and the harsh conditions encountered in various shooting environments. 

Durability in optics is crucial, not only for maintaining the integrity of the device but also for ensuring consistent performance over time. The wear resistance of a magnifier is especially important in its moving parts, such as hinges, as these are the areas most susceptible to wear and tear.

My Testing

In my experience with the HM3X, the durability presented a mixed picture. While the aluminum housing itself remained robust against impacts, I noticed some wear in the hinge area after extensive use. 

This wear, although not immediately impacting the functionality, raised concerns about the long-term durability of the flip-to-side mechanism. It’s a reminder that while the body of the magnifier can be sturdy, the moving parts might require more attention to detail in terms of wear resistance.

6. Ease of Use and Adjustability

Ease of use and adjustability are key factors in the practicality of a magnifier. This includes the ease with which it can be attached, detached, and adjusted for various shooting conditions. 

The HM3X promises a user-friendly experience with features like an easy-to-use quick detach mount and external exposed axis adjustments. 

These features are intended to make it straightforward for shooters to mount the magnifier, adjust it to their specific needs, and switch between firearms with minimal hassle.

My Testing

During my testing, I found that the HM3X was fairly easy to attach and detach from my firearms, thanks to its quick detach mount. However, the adjustments were less impressive. 

The built-in screwdriver for tension adjustment was too small to be practical, especially for shooters with larger hands. While the concept of having an integrated tool is commendable, its execution left much to be desired in terms of usability.

Footprint and Mounting Considerations

The Holosun HM3X occupies a modest footprint on a firearm, which is a significant factor for shooters who value a streamlined setup. 

Its compatibility with Absolute and Lower 1/3 Height Optics makes it a versatile choice for different rifle configurations. The QD mount facilitates easy attachment and detachment, allowing for quick transitions between firearms. 

However, it’s important to consider the quality of the mount and its locking mechanism, as they play a crucial role in the stability and reliability of the optic.

Pros and Cons


  • Lighter Weight: Less cumbersome compared to some other magnifiers.
  • Decent Glass Clarity: Provides clear and sharp imaging for mid-range distances.
  • Affordable Price: More budget-friendly than some competitors.
  • IP67 Certified: Waterproof and dustproof, suitable for harsh conditions.
  • Versatile Compatibility: Works with Absolute and Lower 1/3 Height Optics.
  • Durable Aluminum Housing: Provides robust protection against impacts.


  • Poor Eyebox: Restrictive eye relief, making it difficult to maintain a consistent sight picture.
  • Scope Shadowing: Significant shadowing when not perfectly aligned with the optic.
  • Flimsy Quick Detach Mount: Raises concerns about long-term durability and stability.

Final Verdict

As a professional shooter who has rigorously tested the Holosun HM3X Magnifier, I find it to be a valuable addition to a shooter’s arsenal, especially for those seeking a balance between cost and performance. 

While it excels in enhancing mid-range target acquisition without overburdening the firearm, certain aspects like the eyebox and mount quality could be improved. 

Nonetheless, for its price point, the HM3X offers a commendable combination of durability, clarity, and versatility, making it a practical choice for both casual and serious shooters.


How far is a 3x magnifier good for?

A 3x magnifier, like the Holosun HM3X, is effective for engagement distances up to about 300 yards, which is a standard effective range for most shooters.

What is the field of view of the Holosun 3x magnifier?

The field of view for the Holosun HM3X 3x magnifier is 33.3 feet at 100 yards.

What is the height of the Holosun HM3X?

The height of the Holosun HM3X is 2.44 inches.

What is the distance of the Holosun magnifier?

The Holosun HM3X is a 3x magnifier suitable for aiming and observation at a distance of 600M or more.

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