Holosun HE508T X2 Green Dot Sight Multi-Reticle System – HE508T-GR-X2

The Holosun HE508T X2 Green Dot Sight (HE508T-GR-X2) is a 1x open-reflex pistol green dot sight in a Grade 5 titanium housing on the Trijicon RMR footprint, with the Multi-Reticle System — a 2 MOA green dot, a 32 MOA circle, or both together as a circle-dot — behind a 23 × 16 mm window, weighing 2.0 oz (57 g).

It pairs the toughest housing material Holosun uses with the reticle colour the human eye reads most brightly. Grade 5 titanium gives an exceptional strength-to-weight ratio for hard use, the 23 × 16 mm window keeps the sight picture open, and the X2 revision adds Lock Mode against accidental adjustment alongside Solar Failsafe and Shake Awake. A side-loading CR1632 is rated at up to 50,000 hours, and the whole unit is IP67.

How It Compares

The red version is the HE508T X2 red dot sight. For the same reticle in a 7075-T6 aluminium housing at lower cost, the HE507C X2 green dot sight is the standard option. For a fully enclosed titanium optic in green, the HE509T X2 green dot sight seals the emitter completely. Browse the full Holosun green dot sight range and all RMR footprint red dot sights.

Ideal For

• Section 1 long-barrelled pistols and revolvers held on a UK firearm certificate
• Shooters who pick up a green reticle faster than red against dark backgrounds
• Hard-use range and competition guns where housing strength matters
• Pistol-calibre carbines on an RMR-pattern mount

Key Features

• Housing: Grade 5 titanium, IP67 water and dust resistant, 2.0 oz (57 g)
• Reticle: green Multi-Reticle System — selectable 2 MOA dot, 32 MOA circle, or circle-dot
• Window: 23 × 16 mm viewing window
• Footprint: Trijicon RMR footprint, for RMR-cut slides and RMR-pattern plates
• Illumination: 12 brightness settings — 10 daylight and 2 night-vision compatible
• Electronics: Solar Failsafe supplemental power, Shake Awake and Lock Mode
• Battery: side-loading CR1632 tray, up to 50,000 hours of runtime
• Adjustment: 1 MOA per click

Technical Specifications

What's Included

• Holosun HE508T-GR-X2 green dot sight
• Multi-tool, lens cloth and user manual

UK Delivery & Support

Imported from the USA, duty paid by us, and dispatched tracked from the UK — nothing to pay on delivery — backed by UK-based support.

Frequently Asked Questions

Why is the Holosun HE508T X2 Green made from titanium?
The Holosun HE508T X2 Green Dot Sight uses a Grade 5 titanium housing, which gives an exceptional strength-to-weight ratio compared with aluminium. The complete optic weighs 2.0 oz (57 g), so the extra durability does not cost weight on the slide.

Is the Holosun HE508T X2 Green an RMR or an RMSc footprint optic?
The Holosun HE508T X2 Green uses the Trijicon RMR footprint, so it fits RMR-cut slides and optics-ready pistols supplied with an RMR-pattern adapter plate.

What reticle options does the Holosun HE508T X2 Green have?
It uses the Multi-Reticle System, which switches between a 2 MOA green dot on its own, a 32 MOA circle on its own, and both together as a circle-dot, in a 23 × 16 mm window.

Why choose a green reticle over red?
The eye is more sensitive to green than to red at the same output, so the reticle on the Holosun HE508T X2 Green generally appears brighter and better defined for the same power draw, and it is easier to see for shooters with a mild red-green colour deficiency.

What battery does the Holosun HE508T X2 Green use and how is it changed?
It uses one CR1632 cell in a side-loading tray, so the cell can be replaced with the optic still mounted and zeroed. With Solar Failsafe and Shake Awake, Holosun rates the runtime at up to 50,000 hours.

Is the Holosun HE508T X2 Green weatherproof?
Yes. The Holosun HE508T X2 Green is rated IP67, which covers full dust protection and immersion in water, in a Grade 5 titanium housing.