Holosun 510C Vs Eotech EXPS3

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As an avid shooter, I’ve spent a fair bit of time testing and comparing various optics. In this article, I’m diving deep into a head-to-head comparison of two popular red dot sights: the Holosun 510C Vs Eotech EXPS3. 

This comparison is not just about listing features; it’s about understanding how these sights perform under different conditions and which one emerges as the top performer. 

FeatureHolosun 510CEotech EXPS3
Type of SightReflexHolographic
Reticle2 MOA Dot & 65 MOA Circle68MOA Ring & 1 MOA Dot
Battery LifeUp to 50,000 HoursAround 1,000 Hours
Power SourceBattery (CR2032), Solar Backup1 x CR123 Battery
Weight8.3 Ounces11.2 oz
Mount TypeQD Absolute Co-Witness MountQuick Detach Lever Fits 1″ Weaver/MIL-STD 1913 Rails
Waterproof RatingIP67IP68
Special FeaturesMRS, Shake Awake, Solar FailsafeSpeed Ring Reticle, Compatible with Magnifiers

Overview of Holosun 510C

The Holosun 510C is a versatile and rugged open-reflex sight designed for high performance on various firearms.


  • Reticle: Red 2 MOA Dot & 65 MOA Circle
  • Light Wavelength: 650nm
  • Magnification: 1x, Parallax Free & Unlimited Eye Relief
  • Power Source: Battery (CR2032)
  • Battery Life: Up to 50,000 hours
  • Brightness Settings: 10 DL & 2 NV
  • Window Size: 0.91×1.26 inches
  • Housing Material: Aluminum with Titanium Hood
  • Adjustment per Click: 0.5 MOA
  • Weight: 8.3 Ounces

Overview of Eotech EXPS3

The Eotech EXPS3 is a high-grade holographic weapon sight tailored for close-quarter engagements and rapid target acquisition.


  • Reticle: 68MOA ring & 1 MOA dot
  • Night Vision Compatibility: Gen 1-3 devices
  • Mount: Quick Detach lever fits 1″ Weaver and MIL-STD 1913 Rails
  • Warranty: 10 year limited
  • Dimensions (LxWxH): 3.8” x 2.3” x 2.9”
  • Weight: 11.2 Ounces
  • Power Source: 1 x CR123 battery
  • Battery Life: 1,000 continuous hours
  • Features: Speed Ring Reticle, Wide Field-Of-View, Compatible with Magnifiers

Features Comparison: Holosun 510C VS Eotech EXPS3

1. Reticle and Sight Picture

Holosun 510C

The Holosun 510C flaunts a versatile Multi-Reticle System (MRS) with a crisp 2 MOA dot and a 65 MOA circle. Testing this on my carbine, I found the MRS incredibly practical for rapid target acquisition and transition.

The larger circle works brilliantly for quick, close-range shots, while the finer dot allows for precision at longer ranges. The option to toggle between these reticles without any tools is a significant advantage. 

The sight picture remains clear and uncluttered, which is crucial in dynamic shooting scenarios. However, in bright outdoor conditions, the dot’s visibility can wane slightly compared to the Eotech.

Eotech EXPS3

The Eotech EXPS3’s holographic display, with its 1 MOA dot inside a 68 MOA ring, provides an exceptional sight picture. During my field tests, I noticed how the reticle remained consistently sharp, regardless of the lighting conditions. 

This precise reticle is a boon for longer-range shooting, ensuring minimal target coverage. The holographic technology also helps maintain the reticle’s visibility even if the glass is partially obstructed or damaged. 

Its superior performance in various light conditions and environments is evident, especially when used with night vision devices.


The Eotech EXPS3 takes the lead here. Its holographic sight offers greater versatility and a clearer sight picture in more diverse conditions compared to the Holosun 510C.

2. Durability and Build Quality

Holosun 510C 

The Holosun 510C, with its robust aluminum housing and titanium hood, stands up well to the rigors of regular use. In my field tests, it handled recoil and general wear with no issues

The IP67 waterproof rating is reassuring, knowing it can withstand the elements. However, its durability, while impressive, doesn’t quite match the ruggedness of the Eotech. 

The solar panel and battery compartment are well-constructed, but they do add points of potential vulnerability.

Eotech EXPS3

The EXPS3’s build quality is top-notch. During testing, it shrugged off not just recoil but also accidental bumps and drops. 

The waterproofing and fog-proof capabilities are superior, thanks to its IP68 rating. The Eotech’s ability to remain functional even with a compromised front lens is a testament to its exceptional build quality, offering an unmatched level of reliability.


Eotech EXPS3 wins in this category. Its superior build quality and resilience in harsh conditions outperform the Holosun 510C.

3. Battery Life and Power Efficiency

Holosun 510C 

The Holosun 510C impresses with its extended battery life, boasting up to 50,000 hours. The solar panel feature is a game-changer, providing a failsafe power source in daylight conditions. 

During my testing, I found the Shake Awake technology highly efficient, conserving battery life when the sight is not in use. This combination of long battery life and solar backup makes the 510C a reliable choice for extended use without worrying about power.

Eotech EXPS3 

The EXPS3, while offering exceptional performance, falls short in battery life, lasting around 1,000 hours. This can be a concern for users who require a sight for prolonged periods without regular maintenance. 

My field experience with the EXPS3 required more frequent battery checks and replacements, which might not be ideal for all shooters, especially those in the field for extended periods.


The Holosun 510C emerges as the clear winner in this category. Its significantly longer battery life, coupled with the solar panel, provides greater reliability and convenience compared to the Eotech EXPS3.

4. User Interface and Control

Holosun 510C

The user interface of the Holosun 510C is quite intuitive. The sight features straightforward button controls for reticle selection and brightness adjustment. 

During field use, I found the buttons to be responsive and easy to operate, even with gloves on. The Shake Awake technology also adds convenience, as the sight powers up instantly with movement, ensuring it’s always ready for action.

Eotech EXPS3 

The EXPS3 also boasts an easy-to-use interface, with side buttons that are easily accessible. These controls allowed me to swiftly adjust brightness and switch between reticle modes. 

During testing, the tactile feedback of the buttons provided a reliable operation. Additionally, the compatibility with night vision devices adds another layer of functionality, which is a significant advantage for tactical scenarios.


Both sights perform admirably, but the Eotech EXPS3 takes a slight lead due to its night vision compatibility and the more tactile button feedback, compared to the Holosun 510C.

Pros & Cons of Holosun 510C


  • Durable aluminum housing with titanium hood.
  • Versatile Multi-Reticle System (MRS) with 2 MOA dots and 65 MOA circles.
  • Shake Awake technology extends battery life.
  • Solar Failsafe provides backup power source.
  • 50,000-hour battery life with a CR2032 battery.
  • Parallax-free with unlimited eye relief.


  • Auto mode brightness may not always be optimal.
  • Slightly heavier compared to some competitors.

Pros & Cons of Eotech EXPS3


  • Night vision compatible with all Gen 1-3 devices.
  • Compact design with minimal rail space consumption.
  • Quick Detach lever fits 1″ Weaver and MIL-STD 1913 Rails.
  • 10-year limited warranty.
  • Reliable for close-quarter engagements.
  • 68MOA ring & 1 MOA dot reticle for fast target acquisition.
  • Durable and suitable for rugged use.


Similarities Between Holosun 510C & Eotech EXPS3

  • Both offer red dot sighting systems for precise targeting.
  • Equipped with 0.5 MOA adjustment per click.
  • Both have durable, high-quality construction.
  • Offer multiple brightness settings for various lighting conditions.
  • Include quick-detach mounting systems.
  • Suitable for professional and recreational use.

Differences Between Holosun 510C & Eotech EXPS3

  • Holosun 510C is a reflex sight, while Eotech EXPS3 is a holographic sight.
  • Holosun has a solar power backup, Eotech does not.
  • Holosun has a longer battery life (50,000 hours) compared to Eotech (1,000 hours).
  • Holosun is more budget-friendly; Eotech is pricier.
  • Holosun provides a Multi-Reticle System; Eotech has a fixed reticle pattern.

Final Verdict & My Choice

After extensively testing both the Holosun 510C and the Eotech EXPS3, it’s clear that each sight has its strengths and is tailored to specific needs. 

My personal choice leans towards the Eotech EXPS3 for its unparalleled performance and durability, crucial for high-stake scenarios. It emerged as the winner in most of my comparative tests, particularly in optical quality, build, and mounting system, making it my top pick.


Is Holosun or EOTech better?

Holosun offers great value for money with features like a solar panel and longer battery life. However, for those who prioritize superior optical quality and are willing to invest more, EOTech, with its holographic technology, tends to be the preferred choice.

What is the difference between Holosun 510C and EOTech EXPS2?

The Holosun 510C offers a wider field of view and a solar-powered backup, whereas the EOTech EXPS2, while having a smaller field of view, provides holographic technology for precise targeting.

What is better, red dot or holographic sight?

The choice between red dot and holographic sights depends on personal preference and use-case. Red dot sights are simpler, lighter, and more affordable, while holographic sights offer greater precision and adaptability, albeit at a higher cost.

Does EOTech EXPS3 have night vision?

Yes, the EOTech EXPS3 is compatible with night vision devices, offering multiple brightness settings to accommodate various shooting situations, including those in low-light or night-time conditions.

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