Holosun 509T Green HE-509T-GR X2 – Overview –
The HE509T-GR X2 is a hard-use, nitrogen-purged enclosed LED sight designed for handgun applications. The HE509T-GR X2features a grade 5 titanium housing, Holosun’s Super LED with up to 50k hour battery life, Multi-Reticle System, Solar Failsafe, and Shake Awake technology.
The X2 version adds improved glass clarity, Lock Mode, and a full Multi-Reticle System providing 2MOA dot only, 32MOA Circle only, or a Circle-Dot combination. HE509T-GR X2 includes an adapter plate for compatibility with *RMR footprints. HE509T-GR X2 feature 12 intensity settings, two of which are compatible with night vision devices.
*509T models include an adapter plate for RMR footprints. Please be aware that our adapter plate is not compatible with alternative RMR footprints which use threaded bosses such as those from Zev or Brownells.
Items Dimensions (in inches)
In the Box
- RMR-to-509T Adapter
- T10 L Key
- User Manual
- CR1632 Battery
- Lens Cloth
– TECH & FEATURES –
-
Solar Failsafe™ -
Shake Awake™ -
Multiple Reticle System -
Super LED -
Multilayer Reflective Glass -
Titanium Housing
Solar Failsafe™
Solar Failsafe Technology is one of many innovations featured on solar-equipped Holosun optics. With Solar Failsafe, if your battery fails you always have a backup power source when natural or artificial light is available. Solar Failsafe is activated while in Auto Mode where reticle intensity is automatically adjusted based on the amount of light the solar cell receives. In brighter conditions you have a brighter reticle and in lower-light conditions the reticle will step down in intensity to match any lighting conditions. On models equipped with a super capacitor, it is possible to run the optic, indefinitely, in daytime and night conditions, by maintaining a charge through the Solar Failsafe System all without a battery.
Holosun HE-509T-GR-X2 – Specification –
- MRS: Circle Dot; Dot Only; Circle Only
- Up to 50,000 Hours Battery Life (Setting 6)
- 12 Brightness Setting: 10 DL & 2 NV Compatible
- Enclosed Design & Titanium Housing
- Convenient Tray Battery Compartment
- Parallax-free & Unlimited Eye Relief
PHYSICAL SPECS
| Window Size | 0.66×0.9 |
| Dimension (in) | 1.6×1.16×1.13 |
| Weight (oz) | 1.72 |
MECHANICAL SPECS
| Housing Material | Titanium |
| Surface Finish | Titanium |
| Adjustment per Click | 1 MOA |
| W&E Travel Range | ±30 MOA |
ENVIRONMENT SPECS
| Storage Temperature | -40℃~70℃ |
| Working Temperature | -30℃~60℃ |
| Submersion | IP67 |
| Vibration | 5000G |
The Holosun 509T Green HE-509T-GR X2 is a robust, enclosed reflex sight designed for handgun applications, delivering precision and durability for competitive shooting, self-defense, and tactical scenarios. Crafted from grade 5 titanium with a black anodized finish, this optic weighs 1.72 ounces and measures 1.61 by 1.21 by 1.35 inches, offering a compact yet rugged build. Its IP67 waterproof and nitrogen-purged construction ensures reliability in harsh conditions, including rain, dust, and extreme temperatures ranging from -30 to 60 degrees Celsius, making it ideal for demanding environments. The Holosun HE-509T-GR-X2 features an RMR footprint with an included adapter plate, compatible with standard RMR cuts but not with threaded boss interfaces like ZEV or Shadow Systems.
Equipped with a Multi-Reticle System, the Holosun 509T Green HE-509T-GR X2 offers three reticle options: a 2 MOA green dot, a 32 MOA circle, or a circle-dot combination, powered by a 540nm Super LED. The green reticle enhances visibility, particularly for shooters with astigmatism, and supports 12 brightness settings, including 10 for daylight and two for night vision compatibility. Its 0.66 by 0.9-inch multicoated lens provides a clear, parallax-free sight picture with unlimited eye relief. Powered by a CR1632 battery, the optic achieves up to 50,000 hours of battery life, extended by Shake Awake technology, which deactivates the LED during inactivity and reactivates upon motion. The Solar Failsafe feature ensures operation in bright conditions if the battery fails, with auto-brightness adjustment in Auto Mode.
The Holosun 509T Green HE-509T-GR X2 includes Lock Mode to prevent unintended setting changes, making it ideal for holstered carry, and a side-mounted battery tray for replacement without removing the optic, preserving zero. It offers 1 MOA adjustment clicks with a ±30 MOA windage and elevation range. Accessories include a T10 L key, lens cloth, RMR adapter, user manual, and CR1632 battery. In 2025, the Holosun 509T Green HE-509T-GR X2 sets a benchmark for enclosed pistol optics with its titanium housing, versatile reticle options, and advanced power management, ensuring reliability and performance for shooters.
Steve H (verified owner) –
big fan of holosun optics, i have this one on my henry big boy x. great price and fast shipping.