The Holosun HE509T X2 Red Dot Sight is a hard-use enclosed pistol red dot sight built around a Grade 5 titanium housing — about as tough as a mini reflex gets. The sealed, nitrogen-purged emitter keeps the dot running through debris and weather, making it a serious choice for duty and defensive pistols.
It runs the Multi-Reticle System (2 MOA dot / 32 MOA circle / circle-dot), Solar Failsafe, Shake Awake and Lock Mode, with up to 50,000 hours of runtime. An RMR-to-509T adapter plate is included for wider mounting compatibility.
How It Compares
Want a lighter aluminium enclosed optic? See the Holosun EPS. For an open-emitter RMR-footprint optic, the HS507C X2. Browse all enclosed red dot sights and Holosun pistol red dots, and read enclosed vs open.
Ideal For
- Duty and defensive pistols
- Hard-use, all-weather carry
- Shooters wanting maximum housing strength
Key Features
- Grade 5 titanium enclosed housing
- Multi-Reticle System (2 MOA dot / 32 MOA circle)
- Solar Failsafe + Shake Awake; up to 50,000 h
- Lock Mode; nitrogen-purged, sealed
- RMR-to-509T adapter plate included
Technical Specifications
| Magnification |
1x |
| Reticle |
2 MOA dot / 32 MOA circle (red), MRS |
| Brightness |
10 day / 2 NV |
| Battery |
CR1632 (up to 50,000 h) + Solar Failsafe |
| Housing |
Grade 5 titanium |
| Footprint |
509T (RMR adapter included) |
| Sealing |
Nitrogen-purged, enclosed |
What's Included
- Holosun HE509T X2 enclosed red dot
- 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
What footprint does it use?
The 509T footprint; an RMR-to-509T adapter plate is included for RMR-cut slides and mounts.
Is it enclosed?
Yes — a fully sealed, nitrogen-purged emitter in a Grade 5 titanium housing.
Red or green?
This is the red model; a green-reticle HE509T X2 is also available.
