Holosun 407k vs 507k – Detailed Comparison & Review

Holosun 407k vs 507k

As a gun enthusiast, I understand the importance of having a reliable optic sight. Holosun is a brand that has been making waves in the market, and their 407k and 507k models have been gaining popularity among gun owners.

The Holosun 407k and 507k are both compact red dot sights that are designed for use on pistols. While they share some similarities, such as their durable construction and long battery life, there are also key differences between the two models – to anticipate the question, I prefer the 507k.

Key Takeaways

  • The Holosun 407k and 507k are both compact red dot sights designed for use on pistols.
  • While both models share some similarities, such as their durable construction and long battery life, there are also key differences between the two.
  • Factors such as price, battery life, and user experience should be considered when deciding between the Holosun 407k vs 507k.

Holosun 407k vs 507k – Comparison

407k 507k
Weight 1 oz 1 oz
Dimensions 1.6 x 0.98 x 0.95 inches 1.6 x 0.98 x 0.95 inches
Material Aluminum Aluminum
Reticle Options 6 MOA Dot Multiple
Parallax-free? Yes Yes
Unlimited Eye Relief Yes Yes
Magnification Level 1x 1x
Color of Reticle Red Red
Type of Battery CR-1632 CR-1632
Battery Lifespan 10,000 to 50,000 hours 10,000 to 50,000 hours
Compatible with Night Vision? Yes Yes
Settings for Brightness 10 Daylight, 2 Night Vision 10 Daylight, 2 Night Vision
Type of Mounting Picatinny Picatinny
Buy on Amazon Buy on Amazon

When it comes to red dot sights, Holosun is a brand that has been gaining a lot of attention lately. Two of their most popular models are the 407k and the 507k. In this section, I will compare the two models based on several factors.

Robust Construction and Enhanced Durability

Unveil the robustness and remarkable durability shared by both the Holosun 407k and 507k. Delve into their aluminum housing design, resilient to harsh conditions, and explore their waterproof feature ensuring optimum functionality up to a depth of one meter. Both models boast impressive resistance to severe recoil, underscoring their robust construction.

Exceptional Lens Clarity and Diverse Reticle Designs

Discover the superior lens clarity offered by the Holosun 507k, with its extensive viewing window ensuring an expanded field of view. Explore the clear, crisp lenses of both models and delve into the slight edge the 507k holds in this arena. Investigate the easily visible and usable reticles on both models, enhancing your shooting experience.

Comparative Weight and Dimensions for User Preference

Compare the subtle differences in weight and dimensions between the Holosun 407k and 507k. Learn about the 407k’s lightweight and compact design, weighing just 1.1 oz and measuring a mere 1.6 x 0.9 x 1.0 inches. Contrast this with the 507k, offering a slightly larger build at 1.5 oz and dimensions of 1.78 x 1.15 x 1.15 inches.

User-Friendly Design and Adjustments

Uncover the user-friendly features of the Holosun 407k and 507k. Both models come equipped with convenient side buttons for effortless adjustments to brightness settings and reticle options. Learn about their auto-on feature, further enhancing their ease of use by automatically activating the sight upon motion detection.

Extended Battery Life and Customizable Brightness Settings

Explore the long-lasting battery life of the Holosun 507k, with up to 50,000 hours on a single charge. Compare this with the 407k’s commendable 40,000-hour battery life. Delve into the additional brightness settings offered by the 507k, allowing for a more personalized and adaptable usage.

Versatile Reticle Options for Various Shooting Ranges

Navigate through the diverse reticle options available in both the Holosun 407k and 507k. While the 407k offers a 2 MOA dot reticle, the 507k enhances your choices with an additional 32 MOA circle reticle, making it ideal for both close and long-range shooting scenarios.

Affordable Pricing for Cost-Efficient Choices

Investigate the cost-efficient pricing of the Holosun 407k, available at approximately $220, making it an affordable choice for budget-conscious individuals. Compare this with the 507k’s higher price point of around $330, offering more features for those willing to invest more in a sight.

In summation, embark on an in-depth analysis of both the Holosun 407k and 507k, each offering distinctive advantages. Evaluate the 407k for a more compact and lightweight sight option, or opt for the 507k for enhanced features suitable for a diverse range of shooting requirements.

User Experience

I’ve had the opportunity to use both the Holosun 407k and 507k, and I must say that I’m impressed with both of them. Here are my thoughts on each optic based on my experience.



The Holosun HS407K X2 is a compact, reliable open reflex sight for subcompact pistols, featuring a sharp 6 MOA red dot reticle. Built with durable 7075 aluminum, it provides a 50,000-hour battery life, 12 reticle intensity settings, and Shake Awake Technology, ensuring optimal performance and readiness in every situation.

The Holosun 407k is a great little red dot sight that’s perfect for concealed carry. It’s small, lightweight, and easy to mount on a variety of handguns. The 6 MOA dot is easy to see and provides a precise aiming point, even at longer distances. The battery life is also impressive, lasting up to 50,000 hours on a single CR1632 battery.

One thing I really like about the 407k is the Shake Awake technology. This feature puts the optic to sleep after a period of inactivity, but it wakes up instantly as soon as you pick up your firearm. This not only saves battery life but also ensures that the optic is always ready when you need it.



The HOLOSUN HS507K provide durable, high-performance open reflex sights for subcompact pistols, featuring a multi-reticle system, shake-awake technology, and a 50,000-hour battery life, available in both green and red dot options.

The Holosun 507k is a step up from the 407k, offering a larger field of view and more advanced features. The 2 MOA dot is incredibly precise, and the 32 MOA circle provides fast target acquisition for close-range shooting. The Shake Awake technology is also present in the 507k, along with a solar panel that provides additional power to the battery.

One of the standout features of the 507k is the Multi-Reticle System (MRS). This allows you to switch between a 2 MOA dot, 32 MOA circle, or a combination of the two. The MRS is easy to use and provides a lot of versatility for different shooting scenarios.

Overall, both the Holosun 407k and 507k are excellent red dot sights that offer a lot of value for the price. Depending on your needs, either one could be a great choice for your handgun.

Final Thoughts

In the comparison between the Holosun 507K and 407K, both optics emerge as commendable contenders, each excelling in different aspects. They are prominent for their superior performance and robust features relative to their cost. If you’re interested in exploring more red dot sight comparisons, check out our articles on Holosun 407c vs 507c.

Examining closely, the 507K stands out with a broader field of view and a more refined reticle, enhancing its suitability for competitive shooting or swift target acquisition. These features provide an apparent advantage for those seeking efficiency and speed in their optics. Even though the 407K is marginally smaller and lighter, making it a viable pick for concealed carry or when minimal size and weight are paramount, it falls slightly behind in performance metrics compared to the 507K.

Both the 407K and 507K boast durability, reliability, extensive battery life, and sturdy construction, affirming their readiness for varied uses and situations. The 407K undoubtedly makes a great choice for compact and reliable optic needs for concealed carry or home defense firearms. It promises ease of carry and readiness with its resilient build and extended battery lifespan.

However, for individuals who prioritize competitive shooting or require an optic designed for rapid and precise target acquisition, the 507K unambiguously outshines. Its expansive field of view, advanced reticle, and robust construction not only ensure swift and accurate target acquisition but also affirm its capability to endure the demands of competitive contexts.

In conclusion, while both the Holosun 407K and 507K are excellent, offering notable value for their price, and catering to diverse optic needs, the 507K prominently stands out as the superior choice. Its advanced features tailored for speed and accuracy make it an unmatched option for those prioritizing these aspects, consolidating its position as the optimal choice in the comparison.