Description
The Holosun HE509T-X2-RD-FDE is Holosun’s enclosed-emitter pistol sight in a Grade 5 titanium housing, with the emitter sealed behind a second lens so dust, rain and debris cannot block the reticle. It has a solar failsafe panel, Shake Awake, side-loading CR1632 battery and the Multi-Reticle System, and uses the 509T footprint with an RMR-to-509T adapter plate in the box. The reticle is Multi-Reticle System: 2 MOA dot / 32 MOA circle / circle-dot, red (650 nm). Suits duty, defensive-carry and hard-use optics-ready pistols with an RMR-pattern cut (via the included plate) or a native 509T cut. Specifications below are from the manufacturer’s published data.
Key specifications
- Reticle: Multi-Reticle System: 2 MOA dot / 32 MOA circle / circle-dot, red (650 nm)
- Type: Enclosed reflex pistol sight (sealed emitter)
- Window: 0.66″ x 0.9″
- Housing: Grade 5 titanium, titanium finish (spec table lists ‘7075 T6 Titanium’)
- Footprint: 509T footprint (direct mount); RMR-to-509T adapter plate included
- Battery: CR1632, side-loading tray
- Brightness settings: 8 daylight & 4 night vision
- Power features: Solar failsafe, Shake Awake, auto off, memory, manual and automatic brightness, lockout mode
- Click value: 1 MOA
- Adjustment range: ±30 MOA windage & elevation
- Waterproof: IP67 (HE509T-X2-GD page lists IPX8)
- Shock rating: 5000G vibration
- Operating temperature: -30°C to 60°C (storage -40°C to 70°C)
- Dimensions: 1.6″ x 1.16″ x 1.13″
- Weight: 1.27 oz
- Parallax: Parallax free, unlimited eye relief, multi-coated lens
- Magnification: 1x
- Battery life: Up to 50,000 hours (setting 6)
- Housing colour: Flat Dark Earth (FDE)
- Warranty: Metal housing and optical system: lifetime of the product; LED illumination: 10 years from manufacture (registration required)
- In the box: Optic, RMR-to-509T adapter plate, 2x 6-32×1/4″ screws, lens cloth, multi-tool, manual, warranty card
Frequently asked questions
What reticle does the Holosun HE509T-X2-RD-FDE have?
Multi-Reticle System: 2 MOA dot / 32 MOA circle / circle-dot, red (650 nm), per the holosun.com specification page.
Is the HE509T X2 waterproof?
Holosun rates it IP67 (HE509T-X2-GD page lists IPX8).
Do I need a firearms licence to buy this optic?
No. Optics and mounts are not controlled items in Australia and ship Australia-wide from 3 Gun Tactical, Tingalpa QLD.
3 Gun Tactical, Tingalpa QLD — Licensed Firearms Dealer 50001578. Optics, mounts and accessories can be purchased without a firearms licence and are shipped Australia-wide. Source: Holosun.








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