Holosun 510C FDE Red & Green Dot Sights For Sale

The Holosun HS510C FDE: Open Reflex Performance in Flat Dark Earth

The Holosun 510C FDE open reflex sight is engineered for rapid target acquisition and exceptional durability across carbines, rifles, and shotguns. Featuring Holosun’s advanced technology and housed in a rugged Flat Dark Earth finish, this optic delivers performance required by tactical users and competitive shooters alike. Its titanium-hooded aluminum housing ensures resilience against shock and adverse conditions.

Key Features of the Holosun 510C FDE

The HS510C FDE utilizes the Multiple Reticle System (MRS), allowing the user to select between a crisp 2 MOA Dot, a wide 65 MOA Circle, or both combined (Circle-Dot). This flexibility is crucial for adapting to different shooting environments and distances. Enhanced performance features include:

• Solar Failsafe™: Maintains reticle brightness and power even if the CR2032 battery is depleted, utilizing a solar panel.
• Shake Awake™: A motion-sensing feature that instantly activates the optic upon movement and powers down during periods of inactivity to conserve battery life (up to 50,000 hours).
• Housing: Aluminum body with a protective titanium alloy hood, finished in tactical Flat Dark Earth (FDE).
• Brightness: 12 total settings, including 10 daylight and 2 night vision (NV) compatible settings.

Compatibility & Footprint

Understanding optic mounting is essential for proper fitment. The Holosun 510C FDE comes standard with a Quick Detach (QD) mount.

Mounting the HS510C FDE

The HS510C is designed with a standard Picatinny/Weaver rail footprint. This integrated mounting system allows the optic to be securely installed on virtually any rifle, carbine, or shotgun equipped with a 1913 Picatinny rail. The included QD mount provides an absolute co-witness (1.41"" dot height), ensuring seamless use with standard iron sights. An optional lower 1/3 co-witness spacer is available for users who prefer a slightly higher sight plane (1.63"").

Holosun 510C FDE vs. EOTech XPS2

When selecting a high-performance open sight, the Holosun HS510C is frequently compared to the EOTech XPS2. While both offer rapid target acquisition, they differ significantly in technology and feature sets:

The Holosun 510C FDE offers superior battery longevity and energy-saving features (Shake Awake, Solar Failsafe), making it a highly practical choice for extended use. While the EOTech is a true holographic sight, the 510C’s advanced LED technology and Multiple Reticle System offer comparable speed and performance at a different price point, making the HS510C an extremely competitive option for modern firearms.

Frequently Asked Questions (FAQ)

Is the Holosun 510C FDE compatible with night vision?

Yes. The Holosun HS510C features 12 total brightness settings, including two specific settings designed for use with night vision devices (NVDs). These settings operate at the appropriate intensity to avoid blooming when viewed through Gen 2 or Gen 3 NVDs.

What is the benefit of the Multiple Reticle System (MRS)?

The MRS provides versatility. The 2 MOA dot is ideal for precision shots at longer distances, while the 65 MOA circle-dot combination is optimized for fast, close-range engagement and shot placement on moving targets, similar to a traditional shotgun pattern.

Does the FDE finish wear off easily?

The Flat Dark Earth (FDE) finish on the Holosun 510C is a hardcoat anodization, a durable chemical process that bonds the color to the aluminum housing. It is highly resistant to abrasion, chemicals, and weathering under normal tactical use.

What type of battery does the Holosun 510C use?

The HS510C FDE uses a single CR2032 3V lithium coin battery, housed in a convenient, slide-out side tray for easy replacement without removing the optic from the rail.