Description
This Grade 5 titanium micro sight delivers military-grade durability with advanced solar backup and instant-on technology for hard-use rifle applications.
When reliability can’t be compromised, the Holosun HE515CT-GR combines aerospace-grade titanium construction with innovative power management that keeps your optic running even when batteries fail. The green Super LED reticle offers enhanced visibility in varied lighting conditions, while the side-mounted battery tray allows quick changes without removing the optic from your rifle. With its 50,000-hour battery life extended by solar failsafe technology and shake awake features that activate instantly upon movement, this sight stays ready when you need it most.
Key Features
- Grade 5 Titanium Construction: CNC-machined from Ti-6Al-4V titanium with more than double the tensile strength and five times the fatigue strength of 7075 aluminum, providing exceptional durability while maintaining a lightweight 4.06 oz profile
- Solar Failsafe Technology: Integrated solar panel supplements battery power in sufficient ambient light conditions, ensuring continued operation even if the CR2032 battery depletes during critical use
- Multi-Reticle System (MRS): Three selectable reticle options—2 MOA dot only, 65 MOA circle only, or both combined—allow rapid adaptation between precision shots and fast target acquisition without re-zeroing
- Shake Awake with Programmable Sleep: Motion-sensing technology powers down the LED during inactivity (programmable from 10 minutes to 12 hours) and instantly reactivates to your last brightness setting upon detecting movement
Important Compatibility Notes
- The HE515CT-GR uses a side-mounted battery tray design. When installing the battery, ensure the o-ring is oriented correctly (thicker side down), as it may not be properly positioned from the factory
- The included quick-release mount provides absolute co-witness height at 1.41″. If using aftermarket mounts, verify compatibility with the HE515CT’s dimensions
Why We Carry It
The green Super LED in this optic operates more efficiently than standard red diodes, offering superior power management at high brightness settings while providing excellent visibility for shooters who struggle with red-spectrum colors. Grade 5 titanium’s resistance to seawater corrosion makes this sight suitable for maritime environments where aluminum housings would degrade. Holosun pioneered the integration of solar failsafe technology in rifle optics, and the HE515CT-GR represents their commitment to building backup systems that ensure operational readiness regardless of battery status.
Frequently Asked Questions
How does the green reticle compare to red in terms of visibility and battery life?
The green Super LED appears brighter to the human eye at equivalent power settings and provides better contrast against most backgrounds, making it ideal for daytime use. While green typically consumes more power than red, Holosun’s efficient green diode actually delivers comparable 50,000-hour battery life on setting 6 and offers greater power efficiency at high brightness levels.
Can this sight operate solely on solar power without a battery installed?
No. While the solar panel supplements battery power and extends operational life significantly in bright conditions, the CR2032 battery must be installed for the optic to function. The solar failsafe serves as a backup power source if the battery depletes, provided sufficient ambient light is present.
What mount height does this optic require for proper AR-15 co-witness?
The included QD mount provides absolute co-witness at 1.41″ height, which aligns the optic with standard AR-15 iron sights. For lower 1/3 co-witness (1.63″), you’ll need a separate compatible mount. Note that the HE515CT’s side battery tray design slightly increases the window height compared to top-loading optics.
Spec Sheet
OPTICAL DATA
- Reticle: 2 MOA Dot & 65 MOA Circle
- Light Wavelength: 540nm
- Reticle Color: Green
- Parallax Free: Yes
- Unlimited Eye Relief: Yes
- Magnification: 1x
- Multi-Coatings: Yes
ELECTRONIC DATA
- Power Source: Solar & Battery
- Battery Type: CR2032
- Battery Life (Hours): 50,000 (Setting 6)
- Brightness Setting: 10 DL & 2 NV
MECHANICAL DATA
- Housing Material: Titanium (Grade 5)
- Surface Finish: Titanium
- Adjustment per Click: 0.5 MOA
- W&E Travel Range: ±50 MOA
PHYSICAL DATA
- Window Size: 20mm Diameter
- Dimension (in): 2.67 × 1.45 × 1.6
- Weight (oz): 4.06
ENVIRONMENT DATA
- Working Temperature: -30℃ to 60℃
- Storage Temperature: -40℃ to 70℃
- Submersion: IPX8
- Vibration: 1000G
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