The Holosun HE509T X2 Green Dot Sight is a hard-use enclosed pistol green dot sight built for durability and fast acquisition. Its Multi-Reticle System offers a 2 MOA dot, 32 MOA circle, or circle-dot — switch between precision and speed at will.
A Grade 5 titanium housing, improved glass clarity and Lock Mode handle demanding use, while Solar Failsafe and Shake Awake extend runtime and keep it ready. The enclosed emitter shields against debris, and an RMR-to-509T adapter plate is included for wide pistol compatibility.
How It Compares
Prefer a gold or red reticle? See the HE509T X2 Gold and the wider Holosun pistol dots. Browse all enclosed red dots and the Holosun range; read our enclosed vs open guide and green vs red dots.
Ideal For
- Duty and defensive pistols
- Hard-use carry setups
- Shooters who prefer a green reticle
Key Features
- Enclosed emitter; Grade 5 titanium housing
- Multi-Reticle System: 2 MOA dot / 32 MOA circle / circle-dot (green)
- Solar Failsafe + Shake Awake; Lock Mode
- 10 day / 2 NV brightness; up to 50,000 h on CR1632
- RMR-to-509T adapter plate included
Technical Specifications
| Magnification |
1x |
| Reticle |
2 MOA dot / 32 MOA circle (green) |
| Brightness |
10 day / 2 NV |
| Battery |
CR1632 — up to 50,000 h |
| Housing |
Grade 5 titanium, nitrogen-purged |
| Footprint |
509T (RMR adapter included) |
| Features |
Solar Failsafe, Shake Awake, Lock Mode |
What's Included
- Holosun HE509T X2 green dot sight
- RMR-to-509T adapter plate, T10 key, CR1632 battery, lens cloth, manual
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Holosun's warranty.
Frequently Asked Questions
Green or red reticle?
Many shooters find green appears brighter to the eye; otherwise it's the same HE509T X2 optic.
What footprint is it?
The native 509T footprint, with an RMR-to-509T adapter plate included for RMR-cut slides.
Is it enclosed?
Yes — a fully enclosed emitter for maximum protection from dust and debris.
