Holosun ARO Red Dot Sight 2 MOA Dot Black
Mix and match across the range: 2 items save 5%, 3 save 10%, 4 or more save 15% on your whole basket.
Fits MIL-STD-1913 Picatinny rails. The included 1.63 in mount gives lower 1/3 co-witness with AR-height iron sights and suits lower 1/3 flip-to-side magnifiers.
Not sure it fits your rifle? Ask us before you order
The Holosun ARO (ARO-RD2) is a compact 1x rifle red dot sight with a single 2 MOA red dot, a side-loading CR2032 battery and a 1.63 in lower 1/3 co-witness Picatinny mount.
A small, tube-style rifle optic that does the basics properly: one crisp dot, long battery life and a mount at the height most AR shooters want.
Holosun rates the CR2032 at up to 50,000 hours, and Shake Awake switches the dot off when the rifle is still and back on the moment it moves. There are 10 daylight and 2 night-vision compatible brightness settings, adjusted from the buttons on top. The battery tray loads from the side, so you can change the cell without taking the sight off the mount and losing zero.
The housing is aluminium with a MAO finish and rated IP67 against water and dust. Windage and elevation move 0.5 MOA per click with 50 MOA of travel each way, and eye relief is unlimited. If you want solar backup, the ARO EVO adds it in a larger housing; the ARO keeps things simple and light.
The supplied mount clamps to any MIL-STD-1913 Picatinny rail and sets the dot at lower 1/3 co-witness over standard AR-height iron sights, which suits AR-15 carbines, straight-pull rifles and shotguns with a top rail. It also lines up with lower 1/3 flip-to-side magnifiers such as the Holosun HM3X.
| Type | Compact rifle red dot sight, 1x |
|---|---|
| Reticle | 2 MOA red dot |
| Window | 22 mm (0.87 in) |
| Brightness | 10 daylight / 2 night vision |
| Battery | CR2032, up to 50,000 hours, side tray |
| Power management | Shake Awake |
| Click value | 0.5 MOA |
| Adjustment range | ±50 MOA windage and elevation |
| Housing | Aluminium, MAO finish |
| Water resistance | IP67 |
| Mount | 1.63 in lower 1/3 co-witness, Picatinny |
| Finish | Black |
| Brand | Holosun |
| MPN | ARO-RD2 |
One dot, long battery life, no fuss. Order the Holosun ARO today — ordered in from the manufacturer for you and sent by Royal Mail Tracked 24, with delivery in 7–10 business days.
Explore more: Enclosed Red Dot Sights, Red Dot Magnifiers or browse all Holosun.
| Type | compact rifle red dot sight, 1x |
|---|---|
| Reticle | 2 MOA red dot |
| Window | 22 mm (0.87 in) |
| Brightness | 10 daylight / 2 night vision |
| Battery | CR2032, up to 50,000 hours, side tray |
| Power management | Shake Awake |
| Click value | 0.5 MOA |
| Adjustment range | ±50 MOA |
| Housing | aluminium, MAO finish |
| Water resistance | IP67 |
| Mount | 1.63 in lower 1/3 co-witness, Picatinny |
| Finish | black |
| Brand | Holosun |
| MPN | ARO-RD2 |
| Category | Red Dot Sight |
| Barcode | 810047073598 |
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
One CR2032, rated by Holosun at up to 50,000 hours. It loads from a side tray, so you can change it without removing the sight.
1.63 in, which gives a lower 1/3 co-witness with standard AR-height iron sights.
Yes, it has 2 night-vision compatible brightness settings as well as 10 daylight settings.
The ARO EVO adds Solar Failsafe and a larger 26 mm window. The ARO is the smaller, simpler battery-only version.
It is ordered in from the manufacturer for you and sent by Royal Mail Tracked 24, with delivery in 7–10 business days and £5 tracked UK delivery.
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
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