Description
The Holosun HE503R-GD is a 20mm micro red dot sight for rifles and carbines that uses Holosun’s Gold Super LED. Its Multi-Reticle System lets you run a 2 MOA dot, a 65 MOA circle-dot, or both, and brightness is selected with a rotary switch on the side of the housing rather than push buttons – the CR2032 battery sits inside that rotary dial. The 6061-T6 aluminium housing ships with both a lower 1/3 co-witness mount (1.63 in) and a low mount (0.75 in), so it suits AR-pattern rifles with iron sights as well as low-comb hunting and rimfire rifles. The gold reticle is an alternative for shooters who find a red dot washes out against some backgrounds or who have colour-vision difficulty with red.
- Gold Multi-Reticle System: 2 MOA dot, or 2 MOA dot with 65 MOA circle
- Rotary brightness switch with 12 settings: 10 daylight and 2 night-vision compatible
- Battery life up to 50,000 hours (Holosun overview; spec table lists up to 100,000 hours at setting 6) on a single CR2032
- 20mm window, parallax-free with unlimited eye relief
- 6061-T6 aluminium housing with MAO finish, IP67 submersion rated, 1000G vibration rated
- 0.5 MOA per click adjustment, ±50 MOA windage and elevation travel
- Body 2.75 x 1.43 x 1.62 in (approx. 70 x 36 x 41 mm), 3.53 oz (approx. 100 g)
- Supplied with lower 1/3 co-witness mount, low profile mount, T10 L-key, rubber lens cover, CR2032 battery, lens cloth and manual
FAQ
How does the HE503R-GD differ from the HE503CU-GR? The HE503R-GD has a gold LED and a rotary brightness switch that also houses the battery, and no solar panel. The HE503CU-GR has a green LED, push-button controls, a side battery tray, Shake Awake and a Solar Failsafe panel.
Which mounts are included? Both a 1.63 in lower 1/3 co-witness mount for AR-height sights and a 0.75 in low mount for low-comb rifles are in the box.
Does it work with night vision? Two of the twelve brightness settings are night-vision compatible.
3 Gun Tactical is a licensed firearms dealer (Dealer Licence 50001578) in Tingalpa, Brisbane QLD. Optics and accessories can be shipped Australia-wide.







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