Fully enclosed titanium pistol sight that shields the emitter from dust, mud and rain, with Holosun’s red Multi-Reticle System, Solar Failsafe, Shake Awake and an RMR adapter plate in the box.
$895.70
Available on back-order
The Holosun HE509T-RD-X2 is an enclosed-emitter red dot sight for pistols, machined from grade 5 titanium. Because the LED emitter sits inside a sealed housing, dirt, lint and water cannot block the reticle the way they can on an open reflex sight, which is why the 509T is popular for duty carry and hard outdoor use. It runs Holosun’s red Multi-Reticle System – 2 MOA dot, 32 MOA circle or circle-dot – from a side-loading CR1632 battery with a Solar Failsafe panel for up to 50,000 hours on setting 6. The X2 version adds improved glass clarity and Lock Mode. The sight uses the Holosun 509T footprint and ships with an RMR-to-509T adapter plate, so it fits most RMR-cut optics-ready slides.
Will the HE509T-RD-X2 fit an RMR cut slide? Yes – Holosun includes an RMR-to-509T adapter plate in the box. Direct mounting needs a slide or plate cut for the 509T footprint.
What is the advantage of an enclosed sight over the HE508T? The 509T’s emitter is sealed inside the housing, so rain, dust and lint cannot obscure the reticle; the 508T is an open reflex design with an exposed emitter.
Which reticle colours are available? Holosun lists the 509T X2 in red (this listing), green (HE509T-GR-X2) and gold (HE509T-GD-X2), plus FDE housing options.
3 Gun Tactical is a licensed firearms dealer (Dealer Licence 50001578) in Tingalpa, Brisbane QLD. Optics and accessories ship Australia-wide.
The Holosun HE509T-RD-X2 is an enclosed-emitter red dot sight for pistols, machined from grade 5 titanium. Because the LED emitter sits inside a sealed housing, dirt, lint and water cannot block the reticle the way they can on an open reflex sight, which is why the 509T is popular for duty carry and hard outdoor use. It runs Holosun’s red Multi-Reticle System – 2 MOA dot, 32 MOA circle or circle-dot – from a side-loading CR1632 battery with a Solar Failsafe panel for up to 50,000 hours on setting 6. The X2 version adds improved glass clarity and Lock Mode. The sight uses the Holosun 509T footprint and ships with an RMR-to-509T adapter plate, so it fits most RMR-cut optics-ready slides.
Will the HE509T-RD-X2 fit an RMR cut slide? Yes – Holosun includes an RMR-to-509T adapter plate in the box. Direct mounting needs a slide or plate cut for the 509T footprint.
What is the advantage of an enclosed sight over the HE508T? The 509T’s emitter is sealed inside the housing, so rain, dust and lint cannot obscure the reticle; the 508T is an open reflex design with an exposed emitter.
Which reticle colours are available? Holosun lists the 509T X2 in red (this listing), green (HE509T-GR-X2) and gold (HE509T-GD-X2), plus FDE housing options.
3 Gun Tactical is a licensed firearms dealer (Dealer Licence 50001578) in Tingalpa, Brisbane QLD. Optics and accessories ship Australia-wide.
| Brand | Holosun |
|---|---|
| Model | HE509T-RD-X2 |
| Sight Type | Enclosed reflex pistol sight |
| Reticle | 2 MOA dot, 32 MOA circle or circle-dot (MRS) |
| Reticle Colour | Red |
| Light Source | Super LED, 650nm |
| Magnification | 1x (parallax free, unlimited eye relief) |
| Battery | CR1632 (side-loading tray) |
| Battery Life | Up to 50,000 hours (setting 6) |
| Solar Failsafe | Yes |
| Brightness Settings | 12 (manual and automatic, night-vision compatible settings) |
| Power-Saving | Shake Awake, auto-off, memory, Lock Mode |
| Adjustment per Click | 1 MOA |
| W&E Travel Range | ±30 MOA |
| Window Size | 0.66 x 0.9 in (approx. 17 x 23 mm) |
| Dimensions | 1.6 x 1.16 x 1.13 in (approx. 41 x 29 x 29 mm) |
| Weight | 1.27 oz (approx. 36 g) |
| Footprint | 509T (RMR-to-509T adapter plate included) |
| Housing Material | Grade 5 titanium, black |
| Waterproof Rating | IP67 |
| Vibration Rating | 5000G |
| Operating Temperature | -30°C to 60°C |
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