Holosun ARO Advanced Rifle Optic with 2MOA Reticle - Red Dot
The Holosun ARO Red Dot is a simple, modern rifle optic that keeps things fast, clear, and easy to run. It uses a crisp 2 MOA red dot in a 22mm window, giving you a clean sight picture with enough space to track targets without feeling cramped. It’s built for quick shooting and smooth transitions, whether you’re running close range drills or just plinking at the range. With Shake Awake and long battery life, it basically stays off until you move it, then turns on instantly when you pick up the rifle. It also comes with a lower 1/3 co-witness mount and a rugged aluminum body, so it’s ready for AR-style rifles right out of the box and doesn’t need much thinking once it’s set up.
-Nathan (Technical Advisor)
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.
Optical Specs
- Reticle: 2 MOA Dot
- Light Wavelength: 650nm
- Reticle Colour: Red
- 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
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2 MOA Dot Reticle: Provides a clean, precise aiming point ideal for both close-quarters and precision shooting.
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Compact 22mm Housing Design: A newly designed housing that improves compatibility with Holosun magnifiers and enhances durability.
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1.63” Lower 1/3 Co-Witness Mount: Ensures proper sight alignment with standard AR-height iron sights for quicker target acquisition.
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Shake Awake™ Technology: Automatically powers down the optic when idle and instantly reactivates with the slightest movement, maximising battery efficiency.
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Multi-Coated Glass: Enhances image clarity, brightness, and light transmission while reducing glare and reflections.
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Unlimited Eye Relief: Allows for flexible mounting positions without compromising a clear sight picture.
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Parallax-Free Viewing: Ensures the reticle remains on target regardless of the shooter’s eye position behind the optic.
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Lightweight and Durable Construction: Made from tough, high-quality aluminium with a matte anodised finish for rugged, long-lasting use.
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Wide Brightness Range: Offers 10 daylight and 2 night vision compatible settings to suit any lighting environment.
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IP67 Waterproof Rating: Fully sealed for protection against water and dust, allowing reliable use in wet or harsh conditions.
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High Shock and Vibration Resistance: Built to withstand heavy recoil and rough handling, tested up to 1000G of vibration.
- 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
1. What reticle does the ARO Red use?
A simple 2 MOA red dot designed for fast target acquisition and precision aiming.
2. What size is the window?
It uses a 22mm optical window, giving a wider and clearer field of view than older micro dots.
3. Does it have Shake Awake?
Yes, it automatically powers down when idle and turns back on instantly with motion.
4. How long does the battery last?
Up to around 50,000 hours depending on brightness settings.
5. What mount does it come with?
It includes a lower 1/3 co-witness mount for AR-height setups.
6. Is it compatible with magnifiers?
Yes, the 22mm design is made to pair well with magnifiers for extended range shooting.
7. Is it enclosed or open?
It’s an open-emitter optic, not a fully enclosed design.
8. Is it durable?
Yes, it’s built from aluminum with waterproof and shock-resistant construction for hard use.
9. What rifles is it for?
It’s designed for AR-style rifles, carbines, and other Picatinny rail firearms.
10. What’s the main advantage of the ARO Red?
It’s a lightweight, reliable rifle optic that combines a clear sight picture, long battery life, and automatic power features in a simple, easy-to-use package
- Holosun 10 years / product lifetime warranty. Read more here