Description
The Holosun HS510C delivers EOTech-style performance with dual power systems, three reticle options, and instant-on technology at a competitive price point.
Whether you’re running drills at the range or building a home defense carbine, the Holosun HS510C solves the common red dot dilemma of choosing between battery life and features. This open reflex sight combines Solar Failsafe backup power with Shake Awake motion sensing, ensuring your optic is always ready when you need it. The wide 32mm x 24mm window provides an unobstructed field of view for rapid target acquisition, while the Multi-Reticle System lets you switch between a precision 2 MOA dot, a fast-acquisition 65 MOA circle, or both together—adapting to your shooting situation without changing optics.
Key Features
- Dual Power System: Solar Failsafe technology provides backup power when the CR2032 battery depletes, with the solar panel automatically adjusting brightness based on ambient light conditions
- Multi-Reticle System (MRS): Three reticle configurations—2 MOA dot only, 65 MOA circle only, or combined circle-dot—switch instantly via side-mounted controls to match your shooting scenario
- Shake Awake Technology: Motion sensor automatically powers the LED off after 10 minutes of inactivity and instantly reactivates with the slightest movement, extending the 50,000-hour battery life even further
- Integrated Quick-Detach Mount: CNC-machined QD mount provides absolute co-witness at 1.41″ height and removes tool-free in seconds, with a titanium hood protecting the LED emitter from impact damage
Important Compatibility Notes
- Open emitter design requires periodic cleaning in dusty/muddy environments
- Works with Holosun HM3X magnifier for extended-range applications
Why We Carry It
The Holosun HS510C has become the dominant optic in USPSA PCC division competition, where professional shooters demand reliability under rapid-fire stress. Since its introduction, this sight has consistently earned praise for holding zero through thousands of rounds while offering features typically reserved for optics twice its price. We stock it because it represents genuine innovation in the red dot market—the Solar Failsafe technology means you’ll never experience a complete power failure during critical use, and the Shake Awake feature has proven reliable enough that military and law enforcement users trust it for duty applications. The combination of a titanium hood, aluminum housing, and IP67 waterproof rating delivers durability that rivals established premium brands.
Frequently Asked Questions
How does the Solar Failsafe actually work in real-world conditions?
The solar panel on top of the optic automatically powers the reticle when sufficient natural or artificial light is available. If your CR2032 battery dies, the solar panel takes over seamlessly—you’ll still have a functional optic in any lit environment. The system also auto-adjusts brightness based on ambient light, though you can override this and use manual brightness settings if preferred.
What’s the actual difference between absolute co-witness and lower 1/3 co-witness?
The included mount provides absolute co-witness (1.41″ height), meaning your iron sights align directly through the center of the red dot window. Lower 1/3 co-witness (1.63″ height, which requires a riser) positions your iron sights in the lower third of the window, giving you a less obstructed view through the optic while keeping irons visible.
Is the open emitter design a reliability concern?
The open design trades some dust protection for an unobstructed sight picture and reduced parallax. In testing, users report the emitter window sheds water well and can be quickly wiped clean if debris accumulates. The titanium hood provides substantial impact protection. For most shooting applications—range use, competition, and home defense—the open design poses no practical issues. Extended field use in extremely dusty or muddy conditions may require more frequent lens cleaning compared to enclosed tube-style red dots.
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: Battery (CR2032) with Solar Backup
- Battery Type: CR2032
- Battery Life (Hours): 50,000 (Setting 6)
- Brightness Setting: 10 DL & 2 NV
Mechanical Data
- Housing Material: Aluminum & Titanium Hood
- Surface Finish: MAO (Mil-Spec Hard Anodized)
- Adjustment per Click: 0.5 MOA
- W&E Travel Range: ±50 MOA
Physical Data
- Window Size: 0.91″ × 1.26″
- Dimension (in): 3.3″ × 1.68″ × 1.78″
- Weight (oz): 4.94
Environment Data
- Storage Temperature: -40°C to 70°C (-40°F to 158°F)
- Working Temperature: -30°C to 60°C (-22°F to 140°F)
- Submersion: IP67
- Vibration: 1,000G
