Holosun 507c vs 507k – Whats your right Red Dot Sight?

Holosun 507c vs 507k

Exploring the advantages of red dot sights, these tools primarily enhance shooting speed by simplifying target acquisition compared to traditional iron sights. They also provide unlimited eye relief, allowing flexible head positioning while maintaining sight view.

Applicable to various firearms, red dot sights cater to both tactical and sporting uses, ensuring swift, accurate shooting in diverse situations. Subsequent sections will delve into popular models like Holosun 507c and Holusn 507k, aiming to guide you towards your ideal choice.

Key Takeaways

  • The 507c offers a larger viewing window and additional reticle options, ideal for range shooting.
  • The 507k emphasizes compactness and lightness, well-suited for everyday carry.
  • Both models boast impressive durability but differ in power options, with 507c adding a solar cell for additional power reliability.
  • While the 507c may be better suited for full-sized pistols, the 507k provides a sleek fit for smaller firearms, aligning with varied shooter needs and firearm specifications.

Holosun 507c vs 507k – Comparison

507c 507k
Housing Material Aluminum Aluminum
Dimensions 1.78 x 1.15 x 1.15 1.6 x 0.98 x 0.95
Item Weight 1.5 oz 1 oz
Magnification 1x 1x
Parallax-free Yes Yes
Unlimited eye relief Yes Yes
Reticle Color Red and Green Red
Reticle options Multiple Reticle Options Multiple Reticle Options
Battery type CR-1632 CR-1632
Battery life 10,000 hours (when using dot and circle) to 50,000 (when using circle) 10,000 hours (when using dot and circle) to 50,000 (when using circle)
Night vision Yes Yes
Mounting type Picatinny Mount Picatinny Mount
Buy on Amazon Buy on Amazon

Now that we’ve gone over the features, pros, cons, and suitable uses for both the Holosun 507c and 507k individually, it’s time to pit them against each other. In this section, we’ll look at the similarities and differences between the two.

Sturdy Build: The Journey to Dependability

Holosun 507c and 507k not only have reputations to maintain but also a robustness to verify. Employing “7075 T6 Aluminum” ensures not just an ability to endure but also resist corrosion through ionized aluminum, guaranteeing a matte finish that stands the test of various elements and time.

Wading through varied weather conditions, Holosun 507c and 507k prove their mettle with impressive resistance to water and fog, while additionally, the 507c presents an enhanced design featuring drainage holes, an absent feature in 507k. The 507k basks in the durability brought by its square design, contrasted against the rounded form of the 507c, positing a design differential in long-lasting form factors.

Both models manifest remarkable resilience to shock, sustaining falls and repelling sharp tool damages, proving their robust housing isn’t just for show but a safeguard against a myriad of potential perils.

Holosun bolsters reliability in the 507c and 507k through its limited lifetime warranty, underscoring a commitment to fixing and replacing where faults appear under stipulated circumstances. Drop tests and a rigorous 1500-shot trial underscore the unyielding durability of the 507c and 507k, with their robust aluminum housing taking the brunt and emerging unscathed.

Focused Clarity: Delving into Optic and Reticle

The holistic comparison between the 507c and 507k, especially in their reticle options and optic clarity, unveils crucial disparities, particularly in dot color, which can significantly influence precision in targeting. The larger viewing window in the Holosun 507c lends a superior visual breadth, enhancing precision and environmental awareness during use.

Both models boast a multi-coated lens, safeguarding against detrimental impacts on optical transmittance and establishing a steadfast defense against dimming.

Weighing the Compact: 507c vs 507k

Holosun 507k is a champion of compactness, besting the slightly larger 507c in providing a lighter and more convenient optic for shooters who prioritize manageable sizes and weights in their equipment.

Empowered Operations: Battery and Features Explored

While both models utilize the CR-1632 lithium battery, the 507c steps ahead with an auxiliary silicon solar cell, providing a fallback power source that the 507k lacks, although the 507k does offer easier battery replacement with its side compartment.

Ensuring tactical efficiency, the shake-awake feature stands as a critical function in both models, adapting the optic’s functionality to user movement and saving power when not in active use.

Brightening Focus: A Look at Brightness Settings

With two levels dedicated to night vision, the Holosun 507c and 507k ensure that reduced lighting scenarios don’t compromise target acquisition and shooting accuracy. The inclusion of three operational modes (Automatic, Manual, and Lockout) offers users the flexibility to navigate and adjust the optic’s settings seamlessly, enhancing user engagement and ease of use.

Gaze Comfort: Unlimited Eye Relief

The models present an unhindered and clear view with unlimited eye relief and parallax-free operation, ensuring comfort and accuracy remain at the forefront of their utility.

Installation Ease: Navigating the Footprint

Accommodating different firearm sizes, the Holosun 507c offers a comfortable fit for full-sized pistols with its Trijicon RMR footprint, while the 507k tailors its unique footprint for smaller guns, ensuring adaptability across varying firearm dimensions.

User Experience

Navigating through the distinctive features and diverse applications of Holosun’s sights, particularly the 507c and 507k models, elucidates their formidable presence in the optics market.



The Holosun HS507C X2 is a highly efficient multi-reticle sight, providing a 2 MOA dot and 32 MOA circle. It ensures rapid target acquisition and prolonged battery life, thanks to its Shake Awake Technology. The robust construction and solar fail-safe offer reliable performance for various shooting applications.

Delving into the realm of the Holosun 507c, the sight notably distinguishes itself with a robust construction partnered with advanced, user-friendly features. Encompassing a 2 MOA red dot and a 32 MOA circle, it generously provides versatility, catering to an assortment of shooting scenarios. Solar Failsafe™ technology is incorporated to ensure uninterrupted operation even when the battery capitulates, while the Shake Awake™ technology further elevates its user experience by activating the sight upon detecting movement.

Despite its commendable attributes, such as a notably long battery life, multiple reticle options, and robust aluminum housing, it’s essential to acknowledge the critiques some users have pointed towards its slightly bulky nature and potentially inconvenient button placement for brightness adjustment.

Regardless, the 507c doesn’t shy away from being a splendid choice for a myriad of applications, from prolonged usage in demanding environments to adapting between close-quarter and mid-range shooting scenarios, ensuring that it holds a favorable position among both professional shooters and enthusiasts alike.



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.

Shifting our lens towards the Holosun 507k, this compact micro red dot sight subtly packs a punch with a range of prominent features designed for versatile applications. It gracefully allows users to navigate through a Multi-Reticle System (MRS), providing the freedom to switch between a 2 MOA dot and a 32 MOA ring, or even combine both, ensuring a tailored sight picture according to specific demands.

Boasting an awe-inspiring battery life of up to 50,000 hours, complemented by the Solar Failsafe technology, the 507k assures consistent readiness by harnessing ambient light when devoid of battery power. Although its compact and lightweight design, large field of view, and clear glass pave the way for quick target acquisition, gaining immense favor for concealed carry weapons, it’s pivotal to consider the critiques regarding its brightness settings and smaller window due to its compact size.

Particularly excelling on compact and sub-compact firearms without overhanging on smaller slides and not adding significant weight, the 507k emerges as an excellent choice for concealed carry and backup guns, while also offering an option for those who prioritize a larger sight picture to explore alternatives, such as its cousin, the Holosun 507c.

It’s imperative that, while both the Holosun 507c and 507k establish themselves as reputable and reliable sights, prospective users evaluate their unique features against their own shooting needs and preferences, ensuring a selection that best amplifies their shooting experience and proficiency on the field.

Consequently, although the 507c and 507k have made notable impressions within the optics market, the ultimate determinant of their suitability remains intricately intertwined with the specific demands and expectations of the end-user.

Similarities Between Holosun 507c and 507k

When considering the Holosun 507c vs 507k, there are several key similarities to note:

  • Reticle Options: Both models offer multiple reticle options, including a 2 MOA dot, a 32 MOA ring, or a combination of both. This provides a range of flexibility for different shooting scenarios.
  • Brightness Settings: The 507c and 507k both feature 10 daylight and 2 night vision brightness settings, allowing for adaptability in various lighting conditions.
  • Durability: Both models are built to last with a sturdy aluminum housing, ensuring they can withstand harsh recoil and other elements.
  • Battery Life: Both sights offer impressive battery life, ensuring reliable performance for extended periods.

Differences Between Holosun 507c and 507k

While the 507c and 507k share many similarities, there are also some crucial differences that might influence your decision:

  • Size: The 507k is smaller and lighter than the 507c, making it more suitable for compact firearms.
  • Mounting Options: The 507c provides more flexibility in mounting options compared to the 507k.
  • Battery Access: The 507c has a side-loading battery tray, while the 507k’s battery is bottom-loaded.

In the battle of Holosun 507c vs 507k, the right choice ultimately depends on your specific needs and preferences. Consider factors such as the firearm you intend to use, the mounting options available, and the size and weight of the sight that would best suit your requirements. I hope this comparison helps you make an informed decision. For more red dot sight comparisons, check out our articles on Vortex Venom vs Vortex Viper and Holosun 507c vs 508t.

Making the Right Choice

In the battle of the titans, choosing between Holosun 507c and Holosun 507k can be a daunting task. Each sight has its strengths and unique features, making it well-suited to different shooting scenarios. Let’s delve into some deciding factors and tips that can help you make an informed decision.

Factors to Consider When Choosing Between Holosun 507c and 507k

When comparing the holosun 507c vs 507k, several factors come into play. Your choice will ultimately depend on your specific needs, shooting style, and preferences. Here are some factors to consider:

  1. Size and Weight: The size and weight of the sight can impact its handling and comfort during use. If a compact and lightweight sight is what you prefer, the 507k could be a better fit.
  2. Reticle Options: Reticle choice is largely a matter of personal preference. If you prefer a wider selection of reticles, the 507c offers more options.
  3. Battery Life: Both sights have excellent battery life, but if this is a crucial deciding factor for you, it’s worth closely comparing the two.
  4. Durability: Consider the build quality, water resistance, and shock resistance of the sights. Both the 507c and 507k are made to last, but they do have slight differences in their construction.
  5. Price: Consider your budget. While both sights are high-quality, the 507c is generally more expensive than the 507k.

My Experience with Both Sights

In my personal experience, both the Holosun 507c and 507k have served me well in different scenarios. The 507c’s versatility in reticle options and the slightly larger window made it my favorite for range shooting. On the other hand, the 507k’s compactness and lighter weight made it my go-to for everyday carry.