- Light Source: LED
- Wavelength: 540nm
- Reticle: 2 MOA Dot & 32 MOA Circle
- Magnification: 1x
- Parallax: No
- Unlimited Eye Relief: Yes
- Multi-Coatings: Yes
- Selectable Reticle: Yes
- Solar Power: Yes
- Shake Awake Technology: Yes
- Auto Off: Yes
- Memory: Yes
- Manual Brightness: Yes
- Automatic Brightness: Yes
- Lockout Mode: Yes
- Battery: CR1632
- Battery Life (Setting 6): 50,000 Hours
- Brightness Setting: 8 Daylight & 4
- Side Tray: Yes
- Housing Material: 7075 T6 Titanium
- Surface Finish: Titanium Finish
- Housing Color: FDE
- Adjustment Per Click: 1 MOA
- W&E Travel Range: ±30 MOA
- Storage Terperature: -40°C~70°C
- Working Temperature: -30°C~60°C
- Submersion: IP67
- Vibration: 5000G
- Window Size (in): 0.66" x 0.9"
- Dimension (in) Body: 1.6" x 1.16" x 1.13"
- Weight: 1.27 oz
What Our Experts Think
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Premium Titanium Housing: Built with rugged titanium for exceptional durability while keeping weight low for carry, duty, and competition use.
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Enclosed Emitter Design: Fully enclosed optic protects the emitter from dust, mud, rain, and debris, ensuring reliable performance in demanding environments.
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Multi-Reticle System (MRS): Easily switch between a precise dot, circle, or circle-dot reticle to match different shooting styles and applications.
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Bright Green Reticle: Green illumination offers excellent visibility and fast target acquisition in various lighting conditions.
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Shake Awake Technology: Automatically activates when motion is detected and conserves battery life when idle, keeping the optic ready when needed.
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Solar Backup Capability: Solar-assisted operation adds an extra layer of reliability for extended field use.
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Built for Hard Use: Designed to withstand recoil, impact, and adverse weather while maintaining dependable zero retention.
Q&A
Q: What is the Holosun HE509T-X2-GR-FDE designed for?
A: The HE509T-X2-GR-FDE is a premium enclosed green dot pistol sight built for concealed carry, duty use, competition shooting, and defensive applications.
Q: What reticle options does it offer?
A: It features Holosun’s Multi-Reticle System (MRS), allowing users to switch between a 2 MOA dot, 32 MOA circle, or circle-dot combination for maximum versatility.
Q: Why choose an enclosed emitter optic?
A: The enclosed design helps protect the emitter from dust, mud, moisture, and debris, improving reliability in harsh environments.
Q: Does it include Shake Awake technology?
A: Yes. Shake Awake automatically activates the optic when movement is detected and conserves battery life during inactivity.
Q: How durable is the HE509T-X2-GR-FDE?
A: It features a rugged Grade 5 titanium housing, IP67 waterproof rating, and 5000G vibration resistance for dependable performance.
Q: What is the battery life?
A: The CR1632 battery provides up to 50,000 hours of operation under normal use conditions.
Q: Is it compatible with RMR-cut slides?
A: Yes. An RMR-to-509T adapter plate is included, expanding compatibility with many optics-ready pistols.
Maintenance Tips
- Clean the enclosed titanium housing and lens regularly with a microfiber cloth to maintain a clear sight picture.
- Inspect mounting screws frequently and ensure proper torque to prevent zero shift under recoil.
- Replace the CR1632 battery when brightness decreases and remove it during extended storage.
- Verify zero after heavy use, transportation, or accidental impacts.
- Keep the optic free from dirt, oil, and moisture, even though it is waterproof and built for harsh conditions.
- Avoid using abrasive cleaners or rough materials on the lens coatings.
- Periodically test the Multi-Reticle System and Shake Awake™ function to ensure reliable operation.
- Store in a cool, dry location and use a protective cover or case during transport.
- Check the battery compartment and sealing surfaces occasionally to maintain waterproof performance.
- Inspect the titanium housing for damage after drops or hard impacts to ensure continued durability and accuracy.
Damage 
Loss 
Theft 
