The Holosun HE510C-GR Open Reflex Optic is an exceptionally versatile and robust sighting solution meticulously engineered for a broad spectrum of long gun applications.

Whether you're operating a carbine, a pistol-caliber carbine (PCC), or a shotgun, this optic stands out as a premier choice, offering unparalleled durability, innovative features, and exceptional clarity. It’s designed for shooters who demand reliability, fast target acquisition, and long-lasting performance in any environment.

What Makes the Holosun HE510C-GR an Ideal Choice for Your Firearm?

If you're seeking an optic that can withstand harsh conditions, provide multiple reticle options, and boast an incredible battery life, the HE510C-GR is engineered precisely for your needs. This green dot sight is particularly beneficial for users who find green reticles easier to pick up in various lighting conditions or against specific backgrounds, offering a distinct advantage over traditional red dots for some users.

• For Competitive Shooters: The Multi-Reticle System (MRS) allows for rapid adaptation to different stages or target types, while the wide field of view and parallax-free design ensure quick, accurate shots on the move.
• For Hunters: Its rugged construction and long battery life mean it can endure extended periods in the field, ready when you need it most. The green reticle can be highly visible in natural environments.
• For Home Defense: The instant on with Shake Awake and the diverse reticle options provide critical advantages for quick response and situational awareness in high-stress scenarios.
• For Law Enforcement/Tactical Users: The HE510C-GR's robust build, including its titanium hood, ensures it can handle the rigors of professional use, making it a reliable tool in critical situations.
• For Recreational Shooters: Enjoy an enhanced shooting experience with an optic that offers superior visibility and user-friendly features, making range time more productive and enjoyable.

This optic solves common problems faced by shooters, such as short battery life, lack of reticle versatility, and fragility in challenging environments. Its suite of Holosun innovations sets it apart, providing solutions that enhance performance and reliability.

Core Innovations Driving Performance

The HE510C-GR integrates several of Holosun's most celebrated technologies, elevating it beyond standard reflex sights:

• Solar Failsafe™: This groundbreaking feature provides dual power redundancy, ensuring your optic remains operational even if the CR2032 battery runs low or dies. The Solar Failsafe™ automatically adjusts reticle brightness based on ambient light, providing optimal visibility without manual intervention in bright conditions. In low light or indoors, it seamlessly switches to battery power. This feature is a game-changer for reliability, offering peace of mind during critical operations or extended periods of use.
• Shake Awake™ Technology: This intelligent motion-sensing technology extends battery life dramatically. The optic automatically enters sleep mode after a period of inactivity. The slightest movement, such as picking up your firearm, instantly wakes the optic to its last-used brightness setting, providing immediate readiness without fumbling for controls. This means you're always ready, and your battery lasts significantly longer – up to 50,000 hours on the dot setting.
• Multi-Reticle System (MRS): The MRS offers unmatched flexibility, allowing users to choose between a precise 2 MOA green dot, a fast 65 MOA green circle, or a combination of both (2 MOA dot within a 65 MOA circle).
  • The 2 MOA dot is ideal for precision shots at longer distances, offering minimal obstruction of the target.
  • The 65 MOA circle (which subtends 65 inches at 100 yards, or about 5.4 feet) acts as a rapid acquisition tool, perfect for close-quarters engagements or tracking moving targets. The large circle helps guide the eye quickly to the center for immediate target engagement.
  • The combined dot and circle reticle provides the best of both worlds: a fast aiming point for close range and a precise dot for more distant targets. This adaptability makes the HE510C-GR suitable for a wide array of shooting disciplines and scenarios.

Unmatched Durability and Construction

Designed for the most demanding conditions, the HE510C-GR boasts a construction that instills confidence:

• Housing Material: The optic features a robust aluminum housing, providing a solid and stable foundation for the internal components. Aluminum is chosen for its excellent balance of strength and weight.
• Titanium Hood: A distinctive titanium hood encases the optic, offering exceptional shock resilience. Titanium is renowned for its superior strength-to-weight ratio and resistance to impact, providing an additional layer of protection against accidental drops, impacts, or harsh recoil. This is a significant upgrade over many standard reflex sights, ensuring the optic can withstand heavy use in the field.
• MAO Finish: The Micro-arc Oxidation (MAO) finish provides an extremely hard, corrosion-resistant, and aesthetically pleasing surface. This finish further enhances the optic's durability and longevity.
• Waterproof Design: Engineered to be fully waterproof, the HE510C-GR can reliably perform in wet conditions, from heavy rain to accidental submersion, without compromising its internal electronics or optical clarity. This feature is critical for outdoor enthusiasts and professional users who may encounter diverse weather elements.

Superior Optical Performance and Clarity

The visual experience through the HE510C-GR is outstanding, characterized by crisp, clear imagery and adaptable brightness settings:

• Green Super LED: Utilizing a highly efficient Green Super LED, the reticle is incredibly bright and clear, providing excellent visibility across all lighting conditions. Green reticles are often preferred by users who experience astigmatism or find green more vibrant and easier on the eyes, especially in daylight. The specific wavelength of 540nM ensures a vivid and distinct green display.
• Brightness Settings: With 10 daylight and 2 night vision compatible intensity settings, the optic offers precise control over reticle brightness. This allows users to perfectly match the reticle's intensity to ambient light, preventing washout in bright sunlight or overpowering glare in low-light/night vision scenarios.
• Parallax-Free: The HE510C-GR is designed to be parallax-free at all practical shooting distances. This means the reticle remains fixed on the target regardless of minor head movements or eye positioning, ensuring consistent accuracy and faster target acquisition.
• Multi-Coated Optics: The objective lens (0.91" x 1.26") features multi-coated optics, which reduce glare, maximize light transmission, and enhance image clarity and color fidelity. This results in a brighter, sharper sight picture.
• Unlimited Eye Relief: Like all true reflex sights, the HE510C-GR offers unlimited eye relief, meaning the shooter can place their eye at any comfortable distance from the optic while maintaining a full field of view and reticle visibility. This flexibility is crucial for rapid target acquisition and comfortable shooting from various positions.

Mounting Versatility and Compatibility

The Holosun HE510C-GR is designed for immediate integration with common firearm platforms:

• Included QD Absolute Co-witness Mount: The optic comes standard with a Quick Detach (QD) mount that provides an absolute co-witness height (1.41-inch dot height) when mounted on Picatinny rails. An absolute co-witness means the iron sights align perfectly with the dot in the center of the optic, offering a crucial backup sighting system. The QD lever allows for quick attachment and detachment without tools.
• Optional Lower 1/3 Co-witness Spacer: For users who prefer a lower 1/3 co-witness (where the iron sights appear in the lower third of the optic's window, providing a less cluttered sight picture), a spacer is available separately from Holosun dealers or through DEGuns. This spacer increases the dot height to 1.63 inches, accommodating various shooting preferences and rifle setups.
• Broad Firearm Compatibility: The HE510C-GR is highly adaptable and performs exceptionally well on:
  • Carbines: Particularly AR-platform rifles, where its compact size, durability, and features like Shake Awake and MRS are highly beneficial.
  • Pistol-Caliber Carbines (PCCs): Enhances the performance of PCCs for competition or recreational shooting, offering quick target acquisition and ease of use.
  • Shotguns: Its robust construction and reliable performance make it an excellent choice for slug guns, tactical shotguns, or even turkey hunting setups.

Extended Battery Life and Power Management

One of the most impressive aspects of the Holosun HE510C-GR is its incredible power efficiency:

• 50,000 Hours Battery Life: With its highly efficient Green Super LED and Shake Awake technology, the single CR2032 battery can provide up to 50,000 hours of operation on the dot-only setting. This equates to over 5 years of continuous use, significantly reducing the need for frequent battery changes.
• Dual Power Source (Solar Failsafe™ & Battery): The combination of the internal CR2032 battery and the Solar Failsafe™ system ensures that your optic is always powered, regardless of the conditions. This redundancy is a critical factor for professional users and those who demand ultimate reliability from their equipment.

The Holosun HE510C-GR is more than just a red dot alternative; it's a comprehensive aiming solution designed to enhance every aspect of your shooting. Its lightweight design (4.94 oz), compact dimensions (3.30" L x 1.68" W x 1.78" H), and intuitive controls make it incredibly user-friendly while delivering top-tier performance. The adjustable windage and elevation allow for precise zeroing, with a total adjustment range of 50 MOA for both.

Every HE510C-GR package includes everything you need to get started: the absolute co-witness QD mount, a user manual, a lens cloth for maintenance, a T10 L key for adjustments, and the necessary CR2032 battery. This complete package ensures you can mount and zero your optic immediately.

When considering an optic that combines cutting-edge technology, extreme durability, and exceptional versatility, the Holosun HE510C-GR stands as a leading contender. Its design philosophy centers around empowering the shooter with reliability and adaptability, making it an invaluable asset for any long gun application.

This exceptional optic, model HE510C-GR (SKU: HE510CGR, UPC: 605930624878), is available for purchase at DEGuns, your trusted source for premium firearm accessories and equipment. Elevate your shooting performance and equip your firearm with an optic built for the future.

Holosun HE510C-GR Key Specifications

Feature	Specification
Brand / Model	Holosun HE510C-GR
Magnification	1x
Color / Finish	MAO
Reticle Type	2 MOA Green Dot / 65 MOA Green Circle
Material	Aluminum Housing / Titanium Hood
Firearm Type	Carbine, Rifle, Shotgun
Mount Type	Picatinny Rail (QD Absolute Cowitness)
Wavelength	540nM
Adjustment Value	0.50 MOA per click
Objective Size	0.91" x 1.26"
Brightness	10 Day / 2 Night Vision Settings
Eye Relief	Unlimited
Switch Type	Shake Awake Sensor
Battery Type	CR2032
Adjustment Range	50 MOA Windage / 50 MOA Elevation
Length / Width / Height	3.30" / 1.68" / 1.78"
Proofing	Waterproof
Parallax	Parallax Free
Power Source	Solar Failsafe™ / Battery
Battery Life	50,000 hours (Dot Setting)
Bulb Type	Green LED
Weight	4.94 oz
Optic Coating	Multi-Coated
Included	QD Absolute Cowitness Mount, Manual, Lens Cloth, T10 L Key, Battery
Product UPC	605930624878