Holosun 507K X2 Review – Best Micro Red Dot In 2024?

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Hey shooters! Today’s spotlight is on the Holosun 507K X2. After hands-on testing and comparing it with other red dot sights,

I can say it’s a standout in compact reflex sights for concealed carry. It outperforms its competition with its precision and ease of use.

In short, the 507K X2 didn’t just meet my expectations; it exceeded them, redefining its class with superior performance.

Let’s get started!

Holosun 507K X2 Review

Overall Score 9.4

Tested With Scoring System 2.0

Optical Quality
Durability and Build Quality
Weight and Size
Battery Life
Ease of Use

Learn How I Test & Score Here

⭐️ Verdict: Best Micro Red Dot (9.4)

The Holosun 507K X2 is a top choice for compact pistols, ideal for concealed carry. It’s lightweight, rugged, and offers a long battery life with easy side access for changes. Featuring a crisp, multi-reticle system and a small, durable housing, it’s great for quick target acquisition.

I’m thoroughly impressed. Its compact size is perfect for concealed carry, particularly with pistols like the Glock 43x and Sig P365.


Crisp sight picture

Long battery life

Side battery tray

Easily fits in holsters

Replaces rear sight


The battery side tray screw is too small

Difficult to shoot with both eyes open

Reticle Flickering

Price Comparison

Available at 4 shops 
Optics Planet
Palmetto State Armory

Performance Review: Holosun 507k

1. Optical Quality

The Holosun 507K’s optical quality is stellar, offering a clear, crisp view that’s like a breath of fresh air compared to other optics.

It delivers on its promises, matching the sales pitch with its impressive clarity, and stands out in the crowded market of red dot sights.

Holosun 507K Optical Quality

The benefits are huge like quick target acquisition and reliability, especially in high-pressure situations, thanks to its top-notch clarity.

It feels great when a product over delivers like the 507K. Its optical quality makes it feel like an extension of your own vision.

From my experience, this sight is consistent and reliable, a true all-weather friend for any shooter.

The majority of shooters rave about the clear view the 507K provides. In short, the Holosun 507K sets new standards in optical quality, and that 9.5 clarity score is well earned!

Score: 9.5

2. Durability and Build Quality

Holosun 507K X2 is small

The Holosun 507K is a tough cookie, performing exceptionally well in durability. It’s like the superhero of red dot sights.

Sales materials boast about its ruggedness, and guess what? They’re spot on. This sight can take a beating and still perform like a champ.

In terms of durability, it stands out in the market. It’s like comparing a tank to a sedan – the 507K is built to last.

Holosun 507K Build Quality

The 507k gives you Peace of mind. Whether you’re in rough terrain or caught in bad weather, this sight won’t let you down.

It feels reassuring when a product is as sturdy as the 507K. It’s like having a reliable sidekick in all your shooting adventures.

Personally, I’ve put it through its paces, and it’s come out shining every time. It’s more than just a sight; it’s a durable tool.

In a nutshell, the Holosun 507K’s build quality and durability aren’t just hype; they’re the real deal. It’s a sight that’s ready for anything!

Score: 9.5

3. Weight and Size

Holosun Window Size

The Holosun 507K scores a solid 9 in weight and size. It’s like the featherweight champion of red dot sights.

Marketing materials tout its compactness, and they’re not bluffing. It’s sleek, light, and doesn’t add bulk to your setup.

It’s all about agility and comfort. You barely feel it’s there, making it perfect for long sessions or quick maneuverability.

Feeling wise, when a sight is as light and well-sized as the 507K, it’s like your firearm got an upgrade without adding weight.

From my experience, its size and weight are standout features. It’s discreet yet powerful, a rare combo.

The Holosun 507K’s weight and size earn it high marks. It’s the sleek, efficient choice for shooters who value precision and ease.

Weight28 grams with the battery
Window size‎1.6 x 0.98 x 0.95 inches

Score: 9

4. Battery Life

The 507K nails it with a perfect 10/10 score in battery life. For a professional shooter, this is a game-changer.

Holosun promises a 50,000-hour battery life. In my technical assessment, this isn’t just marketing fluff. The 507K genuinely delivers, providing a level of reliability that’s crucial for long-term use.

Comparatively, in the red dot sight market, the 507K’s battery life is unparalleled. It’s a critical factor for us pros who need equipment that can endure extended sessions and rigorous conditions.

Holosun 507k gives minimal downtime. Not having to frequently change batteries means I can focus more on precision and skill.

A sight that over delivers on battery life, like the 507K, adds confidence to every shot. It’s a tool that’s always ready, mirroring the readiness we professionals strive for.

In my extensive use, the 507K has proven its stamina. It’s rare to find a sight that can keep pace with the rigorous demands of professional shooting.

Score: 10

5. Reticle

The Holosun 507K, with its 9.5 score in reticle quality, is a testament to precision engineering. As a professional shooter, I value accuracy and adaptability in my equipment.

Testing its reticle system, the 507K offers a multi-reticle option, a crucial feature for diverse shooting conditions. The clarity and sharpness of the reticle are exceptional, allowing for precise shot placement.

Holosun 507K Reticle

Comparatively, the 507K stands out in the red dot sight market. Its ability to switch between a 2 MOA dot and a 32 MOA circle is not just a feature; it’s a tactical advantage.

The technical benefits are significant. The 2 MOA dot is perfect for long-range accuracy, while the 32 MOA circle aids in rapid target acquisition at closer ranges.

From a professional standpoint, the 507K’s reticle system feels like a strategic enhancement to my shooting. Its accuracy and versatility align with the high standards required in competitive shooting.

My rigorous testing confirms the 507K’s reticle performance. Whether in controlled range conditions or dynamic outdoor environments, the reticle’s adaptability has been a key factor in successful target engagement.

Online, other professionals echo these sentiments. The 507K’s reticle versatility and precision are frequently cited as crucial factors in its effectiveness and popularity.

Score: 9.5

6. Ease Of Use

The Holosun 507K impressively scores 9 in ease of use, a critical aspect for any shooter who values efficiency and quick adaptability.

The product’s sales materials highlight its user-friendliness, and my testing confirms these claims. The sight is intuitive to operate, even under pressure.

When compared to other red dot sights, the 507K is more user-friendly. Its straightforward design allows for quick adjustments and easy handling, a major plus in high-stakes scenarios.

The benefit of this ease of use is clear: it allows shooters to focus more on their technique and less on equipment handling. This is crucial during competitive shooting or tactical operations.

As a professional, the 507K feels like an extension of my skill set. Its ease of use enhances my performance rather than complicating it.

In my experience, the sight’s user-friendly nature, from installation to field adjustments, has been a significant advantage. It’s reliable and straightforward to use, which is essential in demanding shooting situations.

Online, other shooters share this view. There’s a common appreciation for the 507K’s simplicity and functionality, making it popular among both novices and professionals.

Holosun 507K’s ease of use stands at an impressive 90%. It’s a sight that simplifies operation without compromising performance, aligning perfectly with the needs of professional shooters.

Score: 9

7. Price

The Holosun 507K’s price point stands at a strong 9, it hits a sweet spot for a professional-grade red dot sight.

The sales materials pitch it as an affordable yet high-quality option. In my assessment, this is accurate. The 507K delivers professional performance without the hefty price tag often seen in similar grade optics.

The 507K offers more bang for your buck. It competes with higher-priced sights but doesn’t compromise on quality or functionality.

The advantage here is significant. budget matters and the 507K offers top-tier features without draining the wallet.

From a professional standpoint, the 507K feels like a smart investment. It’s not just about the cost; it’s about the value it brings to your shooting experience.

My personal experience aligns with this. The 507K provides the reliability and features I need at a price that’s justified by its performance.

The Holosun 507K’s pricing is a standout factor, it offers professional-level quality at a price that’s hard to beat, making it a valued choice in the competitive shooting community.

Score: 9

Final Verdict

I had a great experience with the Holosun 5070k X2, and I highly recommend it to anyone looking for a red dot sight for their subcompact pistol. It’s a great sight, and it will serve you well.

If you want a sight designed for concealment and small enough to fit in your holsters, then Holosun 507k X2 is the way to go.


What battery does Holosun 507k use?

The Holosun 507k runs on a 1632 battery.

What footprint is Holosun 507k?

The Holosun 507k is compatible with Shield RMSc/RMS/RMSw/SMS, Sig Romeo Zero Optic, and JP Jpoint Optic footprints, cuts, or mounting plates

What guns will holosun 507k fit?

The Holosun 507k is known for its compatibility with a wide range of handguns, particularly subcompact models. It is designed to fit handguns like the Sig P365, Glock models (including the 17, 19, 26, 27, 43x MOS), and the Springfield Armory Hellcat.

What’s the difference between Holosun 507k and 507c?

The 507c offers both red and green reticles, while the 507k only has a red one. Also, the 507k is more compact and lightweight, making it a better fit for smaller firearms.

What is the difference between Holosun 507k and 407k?

The main difference between Holosun 407k and 507k is the reticle’s size. The Holosun 407k provides a 6 MOA dot, which is great for accuracy, quick detection, and range.

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6 thoughts on “Holosun 507K X2 Review – Best Micro Red Dot In 2024?”

    • If you’re wondering about fitting the Holson 507k onto a Springfield Echelon, unfortunately, that’s a no-go. They’re not compatible.

    • Yes, the Holosun 507K X2 will mount directly onto your Mossberg 940 JM Pro Tactical, no extra plate needed. and based on past experiences with Holosun, it should handle the 12 gauge recoil just fine. So, you’re good to go.

    • If your Holosun 507k is blinking, it’s typically due to one of the following reasons:

      Low Battery: Replace with a new CR1632 battery.
      Loose Connection: Ensure the battery is securely installed and the connections are clean.
      Brightness Settings Issue: Try resetting the sight or manually adjusting the brightness.
      Button Malfunction: If the adjustment buttons are not working, try resetting the sight by holding the “+” button for 5 seconds.


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