Holosun HE510C-GR Elite Open Reflex Sight, Green MRS

Holosun HE510C-GR open reflex sight is an open-frame reflex optic that provides a selectable green reticle for use on rifles and carbines. It offers multiple reticle choices and dual power sources to maintain an illuminated aiming reference.

The HE510C-GR is built to deliver a clear, unobstructed sight picture for carbine, PCC and shotgun platforms where a non-magnified primary optic is required. It addresses the need for fast target acquisition at close to intermediate ranges and provides reticle options that can aid shooters with different visual preferences or astigmatism.

• Multi‑Reticle System (MRS): selectable reticle choices including a 2 MOA center dot, a 65 MOA circle with 2 MOA dot, or the 65 MOA circle alone.
• Open reflex/elite design: features an open-frame lens for a wide sight picture (lens area reported as 32 mm x 24 mm).
• Dual power: integrated solar cell combined with an internal coin-cell battery and internal battery tray for backup power and extended runtime.
• Shake Awake technology: motion-activated LED that conserves battery when the optic is stationary.
• Durable protective hood: titanium-alloyed hood with shock-resistant construction protecting the optic electronics.
• Adjustment resolution: windage and elevation adjustable with 0.50 MOA per click.
• Optic specifics: 1x magnification with a 2 MOA dot size and multi-coated optics.
• Mounting: ships with a quick‑release Picatinny-compatible mount; fits 1913 Picatinny rails and can be used with AR riser QR accessories.

Specifications & construction
Housing combines aluminum body construction with a titanium-alloyed protective hood. Finish is listed as black anodized. Overall external dimensions are provided as approximately 3.30 x 3.70 x 4.75 inches (length/width/height) with a reported overall length of 3.3 inches. Optics are multi-coated and the sight is described as waterproof. Operating method is non-magnified reflex (1x) with unlimited eye relief.

Compatibility & intended use
Designed for long-gun applications: fits 1913 Picatinny rails and mounts with a quick-release Picatinny footprint. Typical setups include carbines, patrol rifles, PCCs and shotguns where a low-profile, fast-acquisition primary optic or sighting aid is desired. The included QD absolute co-witness mount supports co-witness configurations; a lower 1/3 co-witness spacer is available separately.