Collimator Holosun Open Reflex HS510C FDE

Holosun Open Reflex HS510C FDE is an advanced open‑reflex sight featuring a titanium optic cover, Solar Failsafe solar power support, the energy‑saving Shake Awake system, and a multi‑reticle option. Finish: Flat Dark Earth.

The Holosun HS510C is engineered for long guns and demanding field use.

Rugged construction

The sight body is precision‑machined from 6061 aluminum. A titanium optic shroud protects the critical optical components.

The sight mounts to a Picatinny rail (absolute co‑witness height) using a QD clamp for fast on/off installation. The housing is anodized in Flat Dark Earth.

Optics

The HS510C uses multi‑layer anti‑reflective lens coatings for improved light transmission and a clean, sharp image with no parallax error.

Selectable reticle

With the Multi‑Reticle System, the user can select the reticle style: a classic 2 MOA dot, a 65 MOA ring, or a dot+ring combination. This flexibility makes the sight well suited for hunting, competition, and tactical use.

Electronics

All reticle options are projected by a single diode, so switching reticles does not affect zero.

The electronics and LED are shock, recoil and weather resistant, ensuring reliable operation in harsh field conditions.

Solar power

The sight is powered by a CR2032 battery, which the manufacturer rates for up to 50,000 hours at brightness setting 6.

An integrated Solar Failsafe panel supplements battery power under bright light (sun or strong artificial light), auto‑adjusts reticle brightness, and can temporarily substitute for a depleted battery in emergency situations.

Available brightness options: 10 daylight levels and 2 NV‑compatible levels.

Power saving

The exceptional runtime of up to 50,000 hours is enabled by the Shake Awake system, which automatically places the sight into sleep mode when no motion is detected.

Wake the reticle simply by moving the weapon. The idle timeout before sleep is user‑configurable.