Description
The Holosun HS510C open reflex sight delivers rapid target acquisition through a wide field of view, triple reticle options, and industry-leading 50,000-hour battery life backed by solar power.
Experience faster shot-to-shot transitions and improved situational awareness with the HS510C’s expansive viewing window and three versatile reticle configurations. Whether you’re running close-quarters drills or engaging targets at moderate distances, this sight adapts to your shooting scenario with just a button press. The integrated Solar Failsafe technology ensures your optic remains operational even if the battery fails, while Shake Awake motion sensing conserves power by automatically activating only when needed. Built with an aluminum housing and Grade 5 titanium hood, this reflex sight withstands impacts and maintains zero through thousands of rounds.
Key Features
- Multi Reticle System: Switch between 2 MOA dot only, 65 MOA circle only, or combined circle-dot configuration to match your shooting application, from precision work to rapid engagement
- Dual Power System: Solar Failsafe panel provides backup power in ambient light conditions, working alongside the CR2032 battery for uninterrupted operation across all lighting environments
- Motion-Activated Technology: Shake Awake automatically powers on the LED when movement is detected and enters sleep mode after 10 minutes of inactivity to maximize battery longevity
- Combat-Ready Construction: Aluminum housing with Grade 5 titanium protective hood provides shock resistance up to 1,000G vibration and IP67 waterproofing for submersion up to 1 meter
Important Compatibility Notes
This package includes a lower 1/3 cowitness spacer that raises the optic height from 1.41″ (absolute cowitness) to 1.63″. The spacer provides improved cheek weld and sight picture for standard AR-15 platforms.
Why We Carry It
The HS510C has become the dominant choice among competitive PCC shooters in USPSA divisions, frequently replacing premium optics that cost twice as much. Its open emitter design eliminates the tunnel vision effect of tube-style red dots while maintaining excellent parallax-free performance. The sight’s popularity stems from a practical engineering approach: combining a large 0.91″ x 1.26″ window with accessible side-mounted controls that work even with gloved hands. With over 50,000 hours of battery life at medium settings and the ability to run indefinitely on solar power alone in daylight conditions, this optic addresses the most common point of failure in electronic sights.
Frequently Asked Questions
Does this sight work for users with astigmatism?
Results vary by individual. The 2 MOA dot may appear slightly starburst-shaped for those with astigmatism, particularly at higher brightness settings. However, many users report that the circle-dot reticle configuration appears sharper than the dot alone, as the circle provides a defined reference point.
How does the Solar Failsafe actually work?
The solar panel automatically adjusts reticle brightness based on ambient light when in Auto Mode. If your CR2032 battery fails completely, the solar panel will continue powering the sight as long as sufficient natural or artificial light is present. The sight contains a supercapacitor that stores solar energy, allowing operation for several hours even after transitioning to darker environments. For storage, charge the supercapacitor by placing the sight in bright light for 2-3 hours.
Spec Sheet
Optical Data
- Reticle: 2 MOA Dot & 65 MOA Circle
- Light Wavelength: 650nm
- Reticle Color: Red
- Parallax Free: Yes
- Unlimited Eye Relief: Yes
- Magnification: 1x
- Multi-Coatings: Yes
Electronic Data
- Power Source: Solar / Battery
- Battery Type: CR2032
- Battery Life (Hours): 50,000 (Setting 6)
- Brightness Setting: 10 DL & 2 NV
Physical Data
- Window Size: 0.91 × 1.26 inches
- Dimension (inches): 3.3 × 1.68 × 1.78
- Weight (ounces): 4.94
Mechanical Data
- Housing Material: Aluminum & Titanium Hood
- Surface Finish: MAO
- Adjustment per Click: 0.5 MOA
- W&E Travel Range: ±50 MOA
Environment Data
- Storage Temperature: -40°C ~ 70°C
- Working Temperature: -30°C ~ 60°C
- Submersion: IP67
- Vibration: 1000G
