Holosun ARO Advanced Rifle Optic with 2MOA Reticle - Green Dot

SKU#ARO-GR2 Holosun

Holosun ARO Advanced Rifle Optic with 2MOA Reticle - Green Dot

Name: Holosun ARO Advanced Rifle Optic with 2MOA Reticle - Green Dot
Brand: Holosun
Price: 154.99 GBP
Availability: OutOfStock

Available soon Notify me when back in stock

The Holosun ARO Green Dot is a simple, modern rifle optic that gives you a clean 2 MOA aiming point with a bigger, more open sight picture. It’s built around a 22mm window, so you get enough space to track targets quickly without feeling cluttered, and the green dot is usually easier to pick up in bright daylight for a lot of shooters. It also comes with Shake Awake and long battery life, so it basically stays ready in the background until you pick it up. With a lower 1/3 co-witness mount included and a tough aluminum body, it’s a straightforward “just works” optic for AR-style rifles that doesn’t try to overcomplicate anything.

-Nathan (Technical Advisor)

VIEW PRODUCT INFO / SPECS

Reticle: Green Dot

Multi-Reticle (Green)

Multi-Reticle (Red)

Green Dot

Red Dot

Whilst we aim to dispatch in-stock items within 1 working day, please be aware that during busy periods dispatch of in-stock items may be delayed by up to 2 working days. Authorised UK Retailer

WHY BUY FROM US?

PRICE MATCH

SWAP-OUT GUARANTEE

FAST DELIVERY

30 DAY RETURNS

UNMATCHED SERVICE

OBSIDIAN REWARDS

Founded in Devon in 2007, Optics Warehouse has grown to become the UK’s largest specialist optics retailer, offering an unrivalled selection of rifle scopes, thermal imagers, night vision, binoculars, red dots, mounting systems and shooting accessories from the world’s leading brands, all backed by competitive pricing, expert advice and outstanding customer service.

Shaun Ellis, Managing Director Long range target shooting and deer stalking.

Product Information FIND OUT MORE

DESCRIPTION

The Holosun ARO Advanced Rifle Optic takes performance and precision to the next level, building upon the proven success of the popular 403 and 503 series. Featuring an all-new 22mm housing design, the ARO is engineered to pair seamlessly with Holosun’s magnifier systems, making it ideal for shooters seeking a compact, modular setup. Its redesigned 1.63” lower 1/3 co-witness pedestal mount ensures a natural alignment with standard height AR-style sights, enhancing both speed and accuracy in target acquisition.

At the heart of the optic is a 2 MOA dot reticle, offering crisp and precise point-of-aim for both short-range engagements and longer shots when used with magnification. The ARO delivers parallax-free performance with unlimited eye relief, and its multi-coated glass ensures optimal clarity and light transmission in all lighting conditions.

Equipped with Holosun’s innovative Shake Awake™ Technology, the ARO intelligently conserves battery life by powering down the LED when no motion is detected, and instantly reactivating it the moment movement is sensed. This feature provides up to 50,000 hours of battery life from a single CR2032 battery, offering reliable performance whether on duty, at the range, or stored for home defence.

Crafted from durable aluminium with a MAO surface finish, the optic is built to withstand the elements. Its compact dimensions and light weight, just 3.38oz, make it a perfect companion for modern sporting rifles. Rated IP67 for water resistance, with operational temperatures ranging from -30°C to 60°C, and tested for 1000G vibration resistance, the ARO is ready for the most demanding conditions.

With 10 daylight and 2 night vision brightness settings, precision 0.5 MOA adjustments, and a rugged, streamlined form factor, the Holosun ARO delivers elite-level performance in a compact, reliable package.

SPECS

Optical Specs

Reticle: 2 MOA Dot
Light Wavelength: 540nm
Reticle Colour: Green
Parallax Free: Yes
Eye Relief: Unlimited
Magnification: 1x
Lens Coating: Multi-Coated

Electronic Specs

Power Source: Battery
Battery Type: CR2032
Battery Life: Up to 50,000 Hours
Brightness Settings: 10 Daylight Levels & 2 Night Vision Modes
Thermal Modes: Not Applicable
Digital Modes: Not Applicable
Video Recording: Not Applicable
Screen Refresh Rate: Not Applicable
Digital Screen: Not Applicable

Physical Specs

Window Size: 0.86 in
Dimensions: 2.48 × 1.54 × 2.63 in
Weight: 3.38 oz

Mechanical Specs

Housing Material: Durable Aluminium
Surface Finish: MAO (Micro Arc Oxidation)
Adjustment per Click: 0.5 MOA
Windage & Elevation Travel Range: ±50 MOA

Environmental Specs

Storage Temperature: -40℃ to 70℃
Operating Temperature: -30℃ to 60℃
Water Resistance: IP67 Rated (Submersible)
Vibration Resistance: 1000G

FEATURES

2 MOA Dot Reticle: Provides a clean, precise aiming point ideal for both close-quarters and precision shooting.
Compact 22mm Housing Design: A newly designed housing that improves compatibility with Holosun magnifiers and enhances durability.
1.63” Lower 1/3 Co-Witness Mount: Ensures proper sight alignment with standard AR-height iron sights for quicker target acquisition.
Shake Awake™ Technology: Automatically powers down the optic when idle and instantly reactivates with the slightest movement, maximising battery efficiency.
Multi-Coated Glass: Enhances image clarity, brightness, and light transmission while reducing glare and reflections.
Unlimited Eye Relief: Allows for flexible mounting positions without compromising a clear sight picture.
Parallax-Free Viewing: Ensures the reticle remains on target regardless of the shooter’s eye position behind the optic.
Lightweight and Durable Construction: Made from tough, high-quality aluminium with a matte anodised finish for rugged, long-lasting use.
Wide Brightness Range: Offers 10 daylight and 2 night vision compatible settings to suit any lighting environment.
IP67 Waterproof Rating: Fully sealed for protection against water and dust, allowing reliable use in wet or harsh conditions.
High Shock and Vibration Resistance: Built to withstand heavy recoil and rough handling, tested up to 1000G of vibration.

WHAT'S IN THE BOX

Holosun ARO Advanced Rifle Optic with 2MOA Reticle
1x 1.63" optic mount
1x 1.05" optic mount
1x Multi tool
1x Wrench
1x Cleaning cloth

FREQUENTLY ASKED QUESTION(S)

1. What reticle does the ARO Green use?
It uses a simple 2 MOA green dot for fast and precise aiming.

2. Is it compatible with AR-15 rifles?
Yes, it’s designed for rifles and carbines with a Picatinny rail system.

3. What size is the window?
It uses a 22mm optic housing, giving a fairly wide field of view for a micro red dot style optic.

4. Does it have shake-awake?
Yes, it automatically powers down when idle and wakes instantly when movement is detected.

5. How long does the battery last?
Up to around 50,000 hours depending on brightness settings.

6. Does it support night vision use?
Yes, it includes low brightness settings suitable for night vision devices.

7. What height does it mount at?
It comes with a lower 1/3 co-witness mount (about 1.63" optic height).

8. Is it enclosed or open emitter?
It’s an open-emitter design, meaning the LED is not fully enclosed like duty-style optics.

9. Is green better than red?
Not objectively—green can be easier to see in daylight for some people, but it depends heavily on your eyes and lighting conditions. (This is preference-based rather than performance-based.)

10. What’s the main advantage of the ARO Green?
It’s a lightweight, durable rifle optic with a clear dot, wide field of view, and long battery life that keeps things simple while staying modern and reliable.

WARRANTY

Holosun 10 years / product lifetime warranty. Read more here

DELIVERY & RETURNS

Our aim is to ensure that your order arrives with you as soon as possible and in the safest, most cost-effective means.

Please Note: Shipping charges may be subject to additional surcharges if out of area or over weight restrictions.

Please Note: DPD SHIPMENTS REQUIRE THE CUSTOMER TO SHOW A PIN CODE ON DELIVERY - READ MORE: HERE

COURIERS

We use DPD , RoyalMail, TNT and UPS courier services for all our orders whether dispatching to the UK or International. As soon as your order has been dispatched you will receive an email with your unique tracking number. We are unable to add delivery notes to your order regarding safe spaces or neighbour deliveries. If you require this service it can be arranged directly with the courier once the parcel is in their network.

IN-STORE ITEMS

These are items that we have in-stock and will be sent out for delivery as soon as possible. We aim to dispatch all orders within 1-2 working days, but during busy periods dispatch may be delayed by a day or so. If you would like to purchase the item in person then please call ahead to arrange an appointment: 01803 611 895.

PRE-ORDER ITEMS

These are usually items that are going to be out-of-stock for a number of weeks or are in short supply. By purchasing a Pre-Order Item you are in effect paying a deposit for your goods. As soon as the item is back in stock yours will be dispatched within 24 hours where possible. Please see individual product pages for current back-in-stock dates. In rare occasions, these dates can be changed by the manufacturers so we recommend staying in contact with Optics Warehouse depending on the product lead time.

INTERNATIONAL DELIVERY & TAXES

In addition to the above information If your delivery address is outside of the UK you may be subject to import duties and taxes, which are levied once a shipment reaches your country. Any such additional charges for customs clearance must be borne by you. You should note that customs policies vary widely from country to country. Optics Warehouse advises each customer to contact their local customs office for further information if they are in any way unsure of local duties or liabilities. Cross border shipments are subject to opening and inspection by customs authorities which means some packages may be opened and re-sealed.

NEED HELP?

If you require any further assistance, please call us on 01803 611 895 or email sales@opticswarehouse.co.uk

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A NOTE ABOUT DPD SHIPMENTS:

Please be advised that we have now introduced DPD Pins to all DPD orders from Optics Warehouse.
If your shipment is being sent from Optics Warehouse via DPD you will be sent a Pin Code that must be shown to the courier upon delivery.
The pincode is sent VIA email & TEXT message. A valid email address and mobile number must be provided at checkout. Emails will be sent from "Riviera House 3PL" - if you do not receive this email please check your junk or spam folders.
Please note that if you do not display your pin code to the courier driver upon delivery, you will not be able to have your item and you may need to schedule another delivery date to show a valid pin.
Please view the attached slides HERE for further information!

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