Holosun HS510C Red 2 MOA Dot / 65 MOA Circle Open Reflex Sight with QD Mount
The Holosun HS510C delivers a multi-reticle red-dot system in a rugged, lightweight package. A dual-power design, titanium protective hood, and shake-awake technology make this optic a practical choice for shooters who need dependable performance with minimal maintenance. Excellent condition with only a faint finish mark sets this specific unit apart for buyers who want an almost-new sight at a favorable price.
Condition
Overall Condition: Excellent
Specific Condition Notes: The matte black housing shows one faint blemish on the finish; the glass is clear and undamaged.
What’s Included
- Holosun HS510C open reflex red-dot sight
- Multi-Reticle System (2 MOA dot, 65 MOA circle, or both)
- Solar Failsafe with Shake Awake motion activation
- Side-loading CR2032 battery tray (battery installed)
- Factory quick-detach Picatinny/1913 rail mount (absolute co-witness 1.41 in height)
- Grade-5 titanium protective hood
Holosun’s Multi-Reticle System lets the shooter toggle between a precise 2 MOA dot, a rapid-acquisition 65 MOA ring, or the combination, without re-zeroing. Twelve brightness settings—ten for daylight and two compatible with night-vision devices—provide a clear aiming point in changing light.
The HS510C’s dual-power setup draws on a solar panel in bright conditions and automatically switches to the CR2032 battery in low light, extending runtime to approximately 50,000 hours at medium intensity. Shake Awake conserves power further by putting the optic to sleep when idle and re-activating it on movement.
A 6061-T6 aluminum base paired with a grade-5 titanium hood protects the 0.91 × 1.26 in window from impact and recoil. The sight is IP67 sealed, rated for 1,000 G of vibration, and operates from −30 °C to 60 °C, ensuring reliability in harsh environments.
The factory quick-detach lever mount clamps to any Picatinny or 1913 rail and positions the optic at an absolute co-witness height of 1.41 in. Windage and elevation adjust in crisp 0.5 MOA clicks with ±50 MOA total travel, allowing a precise zero on a wide range of platforms.
At just 4.94 oz—including mount and battery—the HS510C adds minimal weight while offering the fast target acquisition and wide field of view demanded in modern shooting applications.