Details
Holosun HS510C Open Reflex Circle Dot Sight | Solar Powered | Multi-Reticle System | 2 MOA Dot | 65 MOA Circle | Titanium Hood
The Holosun HS510C Open Reflex Circle Dot Sight delivers versatile aiming solutions with an open frame design for unlimited field of view. Solar cell powered under normal lighting with backup battery for low-light supplementation, this reflex sight combines sustainable power with reliable performance. The multi-reticle system switches between a 65 MOA circle with 2 MOA dot, 2 MOA dot only, or 65 MOA ring only at the push of a button—with the same LED projecting all reticles, eliminating re-zeroing when changing configurations. Parallax-free optic maintains point of aim accuracy across viewing angles. The titanium-alloyed, shock-resistant hood provides durability and protection for the optical window. This open reflex design excels in close-quarters to medium-range applications where rapid target acquisition and situational awareness matter.
Key Features
- Open Frame Design: Wide, unobstructed sight picture maintains situational awareness
- Solar Powered with Battery Backup: Solar cell provides primary power, battery supplements in low light
- Multi-Reticle System: Three configurations—65 MOA circle + 2 MOA dot, dot only, or circle only
- Single LED No Re-Zero: Same emitter projects all reticles, no zero shift when changing patterns
- 2 MOA Dot Precision: Fine aiming point for accuracy at extended ranges
- 65 MOA Circle: Large ring for rapid close-range acquisition and target framing
- Parallax-Free: Maintains point of aim accuracy regardless of eye position
- Titanium-Alloyed Hood: Shock-resistant construction protects optical components
Perfect For
- AR-15 and AR-10 shooters seeking versatile optics for multiple shooting distances
- Competition shooters running 3-gun or multi-gun who need rapid target transitions
- Tactical users demanding reliable optics with sustainable power and backup capability
- Home defense applications where close-range speed and situational awareness are critical
Solar Power Sustainability
The solar cell primary power system extends battery life dramatically by harvesting ambient light during normal usage. This sustainable approach means the optic can operate indefinitely in daylight conditions without draining the backup battery, reducing maintenance requirements and ensuring the sight remains operational even if battery replacement is delayed. The solar charging proves particularly valuable for rifles that see frequent use or remain in ready condition for extended periods.
Battery Backup Reliability
The backup battery automatically supplements power in low-light conditions where solar charging proves insufficient, ensuring the reticle remains visible across all lighting environments from bright sunlight to dim indoor conditions. This dual-power approach provides redundancy that increases reliability—if either power source fails, the other maintains optic function. The battery backup gives shooters confidence the sight will perform reliably in defensive scenarios that may occur in low light or darkness.
Multi-Reticle Versatility
Three reticle configurations accommodate different shooting scenarios and distances without requiring multiple optics or complicated adjustments. The 65 MOA circle with 2 MOA dot provides both rapid close-range acquisition using the large circle and precision aiming with the fine dot for longer shots. Dot-only mode suits precision shooting where the circle might obscure small targets, while circle-only configuration maximizes speed for close-quarters work. This versatility allows one optic to serve across diverse applications from home defense to competition to recreational shooting.
No Re-Zero Advantage
Using a single LED to project all reticle patterns means switching between configurations doesn't shift point of impact—a critical advantage that allows shooters to adapt reticle choice to the situation without losing their established zero. This design eliminates the frustration and wasted ammunition associated with optics that require re-zeroing when changing reticle patterns, and ensures reliable point of aim regardless of which reticle configuration you select during use.
2 MOA Dot Precision
The 2 MOA dot provides a fine aiming point that doesn't obscure targets at extended ranges, allowing accurate shot placement out to distances where red dot optics remain practical. This relatively small dot size strikes an effective balance—large enough for rapid acquisition under stress, small enough for precision work at 100+ yards. The 2 MOA dimension proves particularly suitable for AR platforms where the optic may be used from close quarters to several hundred yards.
65 MOA Circle Rapid Acquisition
The large 65 MOA circle excels at close-range target acquisition by providing an intuitive aiming reference that's instantly visible in the shooter's peripheral vision. This oversized ring allows almost instinctive target framing at defensive distances, where speed matters more than pinpoint precision. The circle also serves as a rangefinding reference—targets that fill specific portions of the circle correspond to approximate distances, aiding holdover decisions when shooting at extended ranges.
Parallax-Free Accuracy
Parallax-free design maintains point of aim accuracy even when the shooter's eye isn't perfectly centered behind the optic—a critical feature for rapid shooting where perfect cheek weld may not be achieved before each shot. This characteristic ensures the reticle's position accurately reflects bullet impact regardless of head position, improving hit probability during awkward shooting positions, rapid target transitions, or when shooting under stress where textbook form may not be maintained.
Open Frame Advantages
The open reflex design eliminates the tube body found on traditional red dots, providing unlimited peripheral vision and situational awareness. This open architecture allows shooters to see around and through the optic, maintaining awareness of their environment while aiming—valuable for competition stages with multiple targets, tactical scenarios requiring threat assessment, or hunting situations where peripheral motion detection matters. The open frame also reduces the tunnel vision effect that can occur with tube-style red dots.
Titanium Hood Durability
The titanium-alloyed hood provides exceptional impact and shock resistance, protecting the optical window from damage during drops, impacts, or rough handling. Titanium's superior strength-to-weight ratio delivers robust protection without excessive mass that would affect rifle balance. The shock-resistant construction ensures the optic maintains zero and continues functioning reliably even after experiencing impacts that would damage lesser optics, critical for defensive tools and hard-use applications.
Follow safe handling practices and manufacturer instructions for installation and use. Verify proper mounting and torque specifications for your specific firearm and mounting system. Confirm zero and function testing before relying on optic for defensive or critical applications. Battery backup requires periodic battery replacement—establish maintenance schedule appropriate for your usage. Ensure compliance with all applicable federal, state, and local laws.
