The Holosun HE509T X2 in red is a 1x enclosed pistol sight in a Grade 5 titanium housing on the 509T footprint, with the Multi-Reticle System giving a 2 MOA dot, a 32 MOA circle, or the two together.
Titanium and a sealed emitter are what you pay for here: this is built to be knocked about on a working handgun rather than kept nice.
The housing is rated IP67 and tested to 5000G, weighs 1.27 oz and shows a 0.66 × 0.9 in window. Power comes from a CR1632 rated at up to 50,000 hours, with Solar Failsafe drawing on ambient light, Shake Awake sleeping the reticle when the pistol is still, and a lock mode to stop settings being nudged. Illumination runs across 8 daylight settings and 4 that work behind night vision, and an RMR-to-509T adapter plate is supplied.
Reticle choice is the practical benefit: the circle drives fast close work, the bare dot suits a deliberate shot, and switching between them is a button press. Two limits worth knowing — 509T is its own footprint rather than RMR or RMSc, so without the supplied plate it fits only 509T cuts, and the window is small by rifle-sight standards because it is built around a pistol slide.
Why shooters choose the HE509T X2
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Housing — Grade 5 titanium, fully enclosed emitter, IP67 and 5000G
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Reticle — red Multi-Reticle System — 2 MOA dot, 32 MOA circle or circle-dot
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Footprint — 509T, with an RMR-to-509T adapter plate included
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Illumination — 8 daylight and 4 night-vision settings
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Power — CR1632 with Solar Failsafe and Shake Awake, up to 50,000 hours
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Weight — 1.27 oz, with a 0.66 × 0.9 in window
What the HE509T X2 fits
It bolts natively to 509T-pattern cuts and mounts, and to RMR-cut slides and mounts using the adapter plate in the box. The same optic with a green or gold emitter is the HE509T X2 green and the HE509T X2 gold; for an open-emitter titanium sight on the RMR footprint, see the HE508T X2 green.
Specifications
| Type |
Enclosed emitter pistol sight, 1x |
| Reticle |
Multi-Reticle System — 2 MOA dot / 32 MOA circle / circle-dot |
| Reticle Colour |
Red |
| Window |
0.66 × 0.9 in |
| Footprint |
509T, RMR-to-509T plate included |
| Illumination |
8 daylight / 4 night vision settings |
| Battery |
CR1632 with Solar Failsafe, up to 50,000 hours |
| Housing |
Grade 5 titanium, IP67, 5000G |
| Weight |
1.27 oz |
| MPN |
HE509T-X2-RD |
Titanium, a sealed window and three reticles behind one button. Order the HE509T X2 today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: Enclosed Red Dot Sights, HE507C X3 Green or browse all Holosun.
