Description
This titanium-housed pistol green dot sight combines versatile reticle options with solar backup power for uncompromising reliability in any lighting condition.
Whether you’re training at the range, competing, or carrying for defense, the Holosun HE508T-GR X2 delivers the durability and flexibility serious shooters demand. The grade 5 titanium construction provides exceptional strength while maintaining a reasonable weight, and the green 540nm LED proves easier to acquire for many shooters compared to traditional red dots. With Solar Failsafe technology backing up the 50,000-hour battery life, you’ll have confidence your optic stays operational when it matters most.
Key Features
- Grade 5 Titanium Housing: Machined from aerospace-grade titanium for superior strength and corrosion resistance, exceeding the durability of aluminum housings while maintaining a weight of just 2 ounces
- Multi-Reticle System (MRS): Toggle between three reticle options—2 MOA dot only, 32 MOA circle only, or combined circle-dot—to match your shooting distance and preference without changing optics
- Solar Failsafe & Extended Battery Life: Dual power system provides up to 50,000 hours on a single CR1632 battery with the 2 MOA dot, while the solar panel ensures continued operation even if your battery fails in adequate lighting
- Shake Awake Technology: Automatically powers down after 10 minutes of inactivity and instantly reactivates upon movement, preserving battery life while ensuring your sight is ready when you need it
Important Compatibility Notes
The HE508T-GR X2 uses the RMR footprint (Trijicon RMR mounting pattern), which is the industry standard for many pistol optics:
- Direct Mount Compatible: Works with slides cut for RMR pattern, including Glock MOS (using included RMR plate #2), Springfield OSP, and other RMR-ready platforms
- Adapter Required For: Non-optics-ready slides will need professional milling or an aftermarket adapter plate. Some dual-cut slides (such as SIG P320 XTEN) may require a sealing plate for proper installation
- Not Compatible With: Shield RMSc footprint, SIG Romeo1 footprint (DPP pattern), or other compact/subcompact mounting patterns without an adapter
Why We Carry It
The HE508T-GR X2 represents Holosun’s Elite series, combining premium materials with practical innovation. Grade 5 titanium offers more than double the tensile strength of 7075 aluminum while providing five times the fatigue strength, making this sight exceptionally resistant to the repetitive stress of slide-mounted operation. The 540nm green wavelength was specifically chosen because the human eye is most reactive to this portion of the light spectrum, allowing for a brighter perceived dot at lower power settings—particularly beneficial for shooters with astigmatism who often find green dots crisper than red.
Frequently Asked Questions
How does the green dot compare to red for visibility and battery life?
The green 540nm LED appears brighter to most shooters at equivalent power settings due to human eye sensitivity, though it does consume slightly more power than red. Many users with astigmatism report less starburst effect with green dots. Battery life reaches 50,000 hours with the 2 MOA dot on mid-brightness settings, though using the circle-dot reticle reduces this.
Will this sight hold zero on heavy-recoiling pistols, and can it handle rough conditions?
Yes. The grade 5 titanium housing and tested vibration resistance (5000G) make this sight suitable for hard-use applications, including duty, competition, and defensive carry. The IP67 waterproof rating means it can withstand submersion up to 1 meter for 30 minutes, and the operating temperature range of -30°C to 60°C ensures function in extreme environments. User testing has documented proper zero retention through thousands of rounds on various platforms.
How do I change the reticle options and adjust the brightness?
Hold the minus (-) button for 3 seconds to cycle through the three reticle options: 2 MOA dot only, 32 MOA circle only, or combined circle-dot. The plus (+) and minus (-) buttons adjust brightness through 12 intensity settings (10 daylight levels plus 2 night vision compatible settings). Hold the plus (+) button for 3 seconds to switch between Manual, Auto, and Lock Mode. Lock Mode prevents accidental setting changes during carry or holstering.
Spec Sheet
- Reticle: 2 MOA Dot & 32 MOA Circle (Multi-Reticle System)
- Light Wavelength: 540nm
- Reticle Color: Green
- Parallax Free: Yes
- Unlimited Eye Relief: Yes
- Magnification: 1x
- Multi-Coatings: Yes
- Power Source: Solar & Battery
- Battery Type: CR1632
- Battery Life (Hours): 50,000 (2 MOA dot, mid-brightness)
- Brightness Settings: 10 Daylight + 2 Night Vision
- Window Size: 0.63 × 0.91 inches
- Dimensions: 1.78 × 1.15 × 1.15 inches
- Weight: 2 oz
- Housing Material: Grade 5 Titanium
- Surface Finish: Titanium
- Adjustment per Click: 1 MOA
- Windage & Elevation Travel Range: ±50 MOA
- Storage Temperature: -40°C to 70°C
- Working Temperature: -30°C to 60°C
- Water Resistance: IP67 (submersible to 1 meter)
- Vibration Resistance: 5000G
- Footprint: RMR (Trijicon RMR mounting pattern)
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