Holosun Circle Dot/Solar Panel/QD Mount - HS510C
The HS510C Open Reflex Circle Dot Sight has an open frame for a wide sight picture. It is powered by solar cell under normal usage, and a back-up battery to supplement power requirements in low light conditions. The reticle can be switched between a 65 MOA circle with 2 MOA dot, a 2 MOA dot only, or a 65 MOA ring only at the push of a button. Better yet, the same LED projects both reticles, so no re-zeroing is necessary.
Features
• Parallax free with unlimited eye relief.
• New advanced technology LED allows up to 50,000 hours of operation on one CR2032 battery
• 2 MOA dot and a 65 MOA ring
• Dot only, Ring only, or Dot and Ring reticle combinations
• Unlimited field of view
• Titanium-alloyed, shock resistant hood
• Powered by both battery and solar
• QD integrated
What Our Experts Think
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Proven Performance: The HS510C remains one of the most trusted open reflex sights for competition, tactical use, and recreational shooting.
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Fast Target Acquisition: The large viewing window and Multi-Reticle System help shooters quickly find and track targets.
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Solar Failsafe Reliability: The integrated solar panel provides an additional power source, enhancing reliability in bright conditions.
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Shake Awake Convenience: Automatically activates when movement is detected, helping maximize battery life and readiness.
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Secure QD Mount: The included quick-detach mount allows fast installation and removal while maintaining a dependable fit.
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Expert Verdict: A versatile, feature-rich optic that combines rapid target acquisition, long battery life, and rugged durability, making it an excellent value for a wide range of shooting applications.
Q&A
Maintenance Tips
- Clean the lens and solar panel regularly with a microfiber cloth to maintain clear visibility and efficient solar charging performance.
- Inspect the QD mount and mounting hardware periodically to ensure a secure fit and consistent zero retention.
- Replace the battery when needed and remove it during long-term storage.
- Verify zero after heavy recoil, transportation, or accidental impacts.
- Wipe away moisture, dust, and fingerprints from the housing after use.
- Keep the solar panel free of dirt and obstructions for optimal power assistance.
- Avoid harsh chemicals, solvents, or abrasive materials that may damage lens coatings.
- Periodically test the Circle Dot reticle, Shake Awake, and brightness controls for reliable operation.
- Check the battery compartment and seals for debris to help maintain weather-resistant performance.
- Store the optic in a cool, dry location and use a protective case during transport.
Damage 
Loss 
Theft 
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