Description
The Holosun HE508T-RD-X2 is an open reflex red dot sight for full-size and compact pistols, built around a machined grade 5 titanium housing instead of the aluminium used on the 507C. It uses Holosun’s red Multi-Reticle System (MRS), so you can run a 2 MOA dot, a 32 MOA circle or the circle-dot combination, and it is powered by a side-loading CR1632 battery backed by a Solar Failsafe panel for up to 50,000 hours on setting 6. The X2 generation adds Lock Mode to stop accidental button presses. It mounts on the industry-standard RMR footprint, which makes it a direct fit for most optics-ready pistols used in IPSC, Steel Challenge and service matches in Australia.
- Multi-Reticle System: 2 MOA dot, 32 MOA circle or circle-dot, red 650nm Super LED
- Grade 5 titanium housing, titanium finish, black
- Solar Failsafe keeps the reticle running on ambient light if the battery is depleted
- Shake Awake motion activation, auto-off, last-setting memory and Lock Mode button lock-out
- Side-loading CR1632 battery tray – change the battery without removing the sight; up to 50,000 hours on setting 6
- 12 brightness settings with manual and automatic brightness, including night-vision compatible settings
- 1 MOA per click, ±50 MOA windage and elevation travel, parallax free with unlimited eye relief
- IP67 waterproof, 5000G vibration rated; window 0.63 x 0.91 in (approx. 16 x 23 mm), body 1.78 x 1.15 x 1.15 in (approx. 45 x 29 x 29 mm), 2 oz (approx. 57 g)
- RMR footprint; supplied with 6-32 mounting screws, lens cloth, multi-tool, manual and warranty card
FAQ
What is the difference between the HE508T-RD-X2 and the HS507C X2? Both share the RMR footprint, MRS reticle, Solar Failsafe and Shake Awake; the 508T uses a grade 5 titanium housing where the 507C is 7075 aluminium, and the 508T has ±50 MOA of adjustment.
Does the HE508T-RD-X2 fit an RMR cut slide? Yes. Holosun lists it as direct-mount on the RMR footprint, so it fits slides or adapter plates cut for the Trijicon RMR pattern.
Is there a green version? Yes – the HE508T-GR-X2 is the same sight with a 540nm green MRS reticle; this listing is the red (RD) version.
3 Gun Tactical is a licensed firearms dealer (Dealer Licence 50001578) in Tingalpa, Brisbane QLD. Optics and accessories ship Australia-wide.







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