Holosun HS510C Open Reflex Circle Dot Sight – 2 MOA Dot / 65 MOA Circle – Solar Powered – Black

The Holosun HS510C Open Reflex Sight is a rugged, full-featured red dot optic designed for fast target acquisition and dependable performance on rifles, carbines, shotguns, and other platforms equipped with a 1913 Picatinny rail. Its large open-frame window provides a wide, unobstructed sight picture, while the parallax-free 1X optical design allows comfortable both-eyes-open shooting.

The HS510C features Holosun’s Multi-Reticle System, giving users the flexibility to select a precise 2 MOA dot, a large 65 MOA circle, or a combined 2 MOA dot with 65 MOA circle. The dot provides precise aiming for more deliberate shots, while the large circle helps support rapid target acquisition at close range. Because both reticles are projected by the same LED, users can switch reticle options without needing to re-zero the optic.

Built for demanding use, the HS510C includes a titanium-alloy protective hood that helps shield the optic from impacts and harsh conditions. The sight uses solar power during normal daylight use and includes an internal battery backup for dependable operation in low-light conditions. Its quick-release AR riser mount installs easily on standard Picatinny rails and supports a secure, repeatable mounting solution.

Compact, durable, and highly versatile, the Holosun HS510C is an excellent optic choice for range shooting, hunting, competition, training, and defensive rifle setups.

Key Features

• Open reflex sight with wide viewing window
• 1X magnification for fast, both-eyes-open shooting
• Multi-Reticle System with three reticle options
• 2 MOA dot for precise aiming
• 65 MOA circle for rapid close-range target acquisition
• Dot only, circle only, or dot-and-circle reticle modes
• No re-zero required when switching reticle options
• Solar-powered operation with internal battery backup
• Parallax-free optical design with unlimited eye relief
• Titanium-alloy shock-resistant protective hood
• Quick-release AR riser mount included
• Fits MIL-STD 1913 Picatinny rail systems
• Durable black finish
• Ideal for rifles, carbines, shotguns, range use, hunting, and competition

Specifications