Description
The Holosun HS510C Open Reflex Sight (HS510C-FDE-R) is a large-window solar and battery powered open reflex sight built on a 6061 T6 aluminum housing with a titanium-alloy protective hood in a Flat Dark Earth finish, delivering a selectable 65 MOA ring with 2 MOA red center dot Multi-Reticle System through a 0.91 x 1.26 inch window with up to 50,000 hours of CR2032 battery life. Designed for carbine and PCC shooters who want a large-window solar-powered open reflex red dot sight for rifles in an FDE finish that coordinates with tan and earth-tone platform builds, the HS510C-FDE-R delivers Solar Failsafe, Shake Awake, and a quick-release mount straight out of the box.
Key Features
Part number: HS510C-FDE-R
Reticle: 65 MOA outer ring with 2 MOA red center dot, MRS selectable
Reticle color: Red, 650nm Super LED
Magnification: 1x
Window size: 0.91 inches high x 1.26 inches wide
Housing: 6061 T6 aluminum with titanium-alloy protective hood
Finish: Flat Dark Earth MAO anodized
Dimensions: 3.3 inches long x 1.68 inches wide x 1.78 inches high
Weight: 4.94 oz
Adjustment per click: 0.5 MOA
Windage and elevation travel: plus or minus 50 MOA
Brightness settings: 10 daylight, 2 night vision
Power source: Solar Failsafe and CR2032 battery, internal tray compartment
Battery life: 50,000 hours at setting 6
Shake Awake: Yes
Mount included: Quick-detach absolute co-witness Picatinny and Weaver, 1.41 inch dot height
Water resistance: IP67
Vibration resistance: 1,000G
Working temperature: -22 to 140 degrees Fahrenheit
Special Features
The Flat Dark Earth finish coordinates directly with FDE handguards, stocks, and furniture, giving tan and earth-tone carbine builds a cohesive, matched appearance without painting or wrapping the optic.
Solar Failsafe keeps the reticle powered in any lit environment even after battery depletion, removing battery failure as a single point of failure on a duty or hunting rifle.
The titanium-alloy hood shields the emitter and lens from direct impact, muzzle blast, and transport damage that unprotected open emitter designs cannot withstand.
The Multi-Reticle System delivers three aiming configurations: 2 MOA dot only, 65 MOA ring only, or the full circle-dot combination for close-quarters through mid-range work in a single optic.
Practical Benefits
The large 0.91 x 1.26 inch window and unlimited eye relief give you a wide, unobstructed sight picture that makes the reticle fast to find on a rapid mount across carbine, PCC, and shotgun applications.
The included QD mount installs tool-free and puts the dot at absolute co-witness height, so the HS510C-FDE-R goes straight from the box onto any standard Picatinny rail without additional hardware.
Your HS510C-FDE-R gives you a solar-backed, titanium-protected, FDE-finished red dot that stays powered, stays matched to your build, and stays ready without checking batteries before every range session or hunt.
The Holosun HS510C Open Reflex Sight (HS510C-FDE-R) with its 65 MOA ring and 2 MOA red dot in Flat Dark Earth is a smart addition for carbine and PCC shooters who want a large-window solar-powered open reflex sight that matches their tan-finish build without sacrificing any features.
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