The Holosun Open Reflex HS510C Multi Reticle, Solar Panel, Black (SKU: HS510C / 15789) is a modern open sight designed for long-range firearms. Designed to withstand the harshest conditions, it features an additional titanium optics cover. An electronic control system and a powerful LED ensure high efficiency and long-lasting, stable operation.
Power is supplied by a CR2032 battery, which provides up to 50,000 hours of operation at the sixth brightness setting. The optical system utilizes multi-coated lenses, ensuring high light transmission. The image visible through the lens is bright, high-contrast, and parallax-free.
The Multi Reticle system allows the user to choose from three reticle markings: a 2 MOA dot, a 65 MOA circle, or a combination. All are generated by a single LED, eliminating the need to re-zero when changing reticles.
The solar cell in Solar Failsafe technology performs several functions: it can directly power the device in adequate sunlight, supports the battery in low-light conditions, and automatically adjusts the spot's intensity to the ambient light. The user also has the option of manually adjusting the brightness – 10 standard modes and two modes for use with night vision.
Additionally, the Shake Awake system puts the viewfinder to sleep after a period of inactivity and then wakes it up upon detecting movement. This significantly extends battery life.
The housing is made of milled 6061-T6 aluminum, with titanium shields protecting the most sensitive points. Picatinny or Weaver mounts and a QD clamp allow for quick and convenient attachment of the scope without tools.
• open red dot sight with three aiming points
• wide field of view
• up to 50,000 hours of operation on one battery
• Multiple Reticle System – selection of a dot, circle or a combination thereof
• no need to reset when changing the reticle
• operation in automatic or manual mode
• Solar Failsafe – built-in solar cell to support power supply
• light sensor that automatically regulates the intensity of the spot
• multi-coated lens
• no parallax phenomenon
• Shake Awake system – waking up from sleep mode after movement
• memory of the last setting of the aiming mark and brightness
• low battery indication (flashing dot)
• durable 6061 aluminum and titanium construction
• quick QD mounting in Picatinny / Weaver standard
• IP67 waterproof and dustproof
• all in an aesthetic polymer box
• objective lens: 32 × 24 mm
• aiming points: 2 MOA dot, 65 MOA circle, dot + circle
• Backlight source: LED
• eye distance: unlimited
• adjustment: 1/2 MOA per click
• adjustment range: ±40 MOA
• parallax: ±1 MOA
• coating: multi-layer
• magnification: 1×
• power supply: solar cell, CR2032 battery
• operating time: 50,000 h (dot, medium brightness), 20,000 h (dot + circle, medium brightness)
• operating modes: automatic, manual
• automatic shutdown: after 10 minutes
• brightness adjustment: 10 daytime levels + 2 for night vision
• housing material: 6061-T6 aluminum, titanium cover
• finish: micro-arc oxidation MAO
• assembly: QD
• rail: Picatinny / Weaver
• tightness class: IP67
• operating temperature: -10°C to 50°C
• storage temperature: -40°C to 70°C
• vibration resistance: up to 1000 G
• dimensions: 84 × 65 × 40 mm
• weight: 205 g
• color: black








