Description
This FDE green open reflex sight combines three versatile reticles, solar backup power, and motion-activated technology in a titanium-reinforced housing purpose-built for carbines and PCCs.
Fast target acquisition starts with the right optic, and the HS510C-FDE-G delivers a wide field of view through its open reflex design while maintaining the precision you need for accurate shot placement. The green reticle option provides enhanced visibility in bright outdoor conditions and daylight environments where traditional red dots can wash out. With automatic brightness adjustment via Solar Failsafe and motion-sensing Shake Awake technology, this sight stays ready while conserving battery life for extended field use.
Key Features
- Multi-Reticle System: Switch between a 2 MOA dot for precision, a 65 MOA circle for rapid acquisition, or the combined circle-dot reticle at the push of a button—all without re-zeroing
- Dual Power Sources for Maximum Reliability: CR2032 battery provides up to 50,000 hours of operation at setting 6, while the Solar Failsafe automatically powers the reticle using ambient light, even if the battery fails
- Shake Awake Technology: Motion sensor automatically powers the LED on when detecting movement and enters sleep mode during inactivity, extending battery life while ensuring instant readiness
- Titanium-Reinforced Construction: 6061-T6 aluminum housing with titanium hood provides enhanced impact resistance and durability while maintaining a relatively compact profile for long gun applications
Important Compatibility Notes
- Designed specifically for Picatinny rail systems—not compatible with Weaver-only rails
- May sit too low for optimal viewing on some shotgun platforms without an aftermarket riser
Why We Carry It
The HS510C has become the go-to reflex sight for USPSA PCC division competitors who need rapid target transitions and reliable performance under match pressure. Professional shooters appreciate that the open emitter design allows for quick lens cleaning between stages, and the parallax-free optical design maintains point of aim regardless of eye position behind the sight. The green reticle variant offers a distinct advantage for shooters who find green wavelengths easier to acquire or those who experience starburst effects with red dots due to astigmatism.
Frequently Asked Questions
What’s the difference between the green and red versions of this sight?
The green version uses a 520nm wavelength LED instead of the 650nm red wavelength. Green dots often appear sharper to shooters with astigmatism and provide better visibility in bright outdoor conditions. However, green reticles typically consume slightly more battery power and may cost more than red variants.
Will this work with my night vision equipment?
The HS510C includes two dedicated night vision settings among its 12 brightness levels.
Specifications
Optical Data
- Reticle: 2 MOA Dot & 65 MOA Circle (Multi-Reticle System)
- Light Wavelength: 520nm (Green)
- Reticle Color: Green
- Parallax Free: Yes
- Unlimited Eye Relief: Yes
- Magnification: 1x
- Multi-Coatings: Yes
- Window Size: 0.91″ × 1.26″
Electronic Data
- Power Source: Battery with Solar Failsafe
- Battery Type: CR2032
- Battery Life: Up to 50,000 Hours (Setting 6)
- Brightness Settings: 12 Total (10 Daylight & 2 Night Vision Compatible)
Mechanical Data
- Housing Material: 6061-T6 Aluminum & Titanium Hood
- Surface Finish: Matte Anodized (MAO)
- Adjustment per Click: 0.5 MOA
- Windage & Elevation Travel Range: ±50 MOA
Physical Data
- Dimensions: 3.3″ × 1.68″ × 1.78″ (L × W × H)
- Weight: 4.94 oz
- Mount Height: 1.41″
Environmental Data
- Operating Temperature: -30°C to 60°C (-22°F to 140°F)
- Storage Temperature: -40°C to 70°C (-40°F to 158°F)
- Waterproof Rating: IP67
- Shock Resistance: 1000G
Included Accessories
- Absolute Cowitness QD Mount
- T10 L Key
- User Manual
- CR2032 Battery
- Lens Cloth
