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HOLOSUN

Holosun ARO-CORE Series, 2 MOA or 2 MOA/Multi-Reticle Options with Shake Awake, 22mm Optical Window, 12 Brightness Settings, Co-Witness & Low Mounts, (Red, Green, Gold Reticle Options)

  • Based on 293 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Sep 9
Order within 16 hours and 42 minutes
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Color: Green


Style: 2 MOA


Features

  • ARO-CORE-RD2 (2 MOA Red Dot) ARO-CORE-GR2 (2 MOA Green Dot) ARO-CORE-GD2 (2 MOA Gold Dot) ARO-CORE-MRS-RD (Multi-Reticle Red Dot) ARO-CORE-MRS-GR (Multi-Reticle Green Dot) ARO-CORE-MRS-GD (Multi-Reticle Gold Dot)
  • Advanced Dot System for Enchanced Precision The Advance Rifle Optic Holosun's next-gen dot optic, combining trusted design elements from the 403 and 503 series with a wider 22mm window and a crisp 2 MOA dot, offering fast and accurate target acquisition in a compact, durable package.
  • Reliable Motion Activation with Shake Awake Equipped with Holosuns Shake Awake technology, the Advance Rifle Optic automatically powers on with movement and shuts off when idle, delivering dependable performance whether it's mounted on a home defense rifle or your go-to range setup.
  • Extended Battery Life & Tool-Free Access Powered by a CR2032 battery with up to 50,000 hours of runtime (on setting 6), the optic features a side-loading battery tray for easy changes without removing the sight.
  • Adaptable Brightness for Any Environment Manual brightness controls give you the flexibility to adapt quickly to lighting conditions, with 10 daylight and 2 night settings for all-day operability. Lockout Mode prevents accidental changes during storage or use.
  • Tough, Lightweight, and Weather-Resistant Constructed from rugged aluminum with a matte black anodized finish, the Advance Rifle Optic is IP67 rated for dust and water resistance. At just 3.38 oz (optic body), it delivers field-ready durability in a minimal footprint.
  • Flexible Mounting Options for Any Setup Ships with both a 1.63 lower 1/3 co-witness mount and a 1.05 low mount, ensuring compatibility with a wide variety of carbine platforms and shooter preferences.

Description

The Holosun ARO-CORE represents the latest evolution of Holosun’s renowned 403 and 503 series, offering a perfect balance of performance, reliability, and affordability. Designed with shooters in mind, the ARO-CORE features a refined 22mm optical window for enhanced visibility and a crisp 2 MOA dot, providing an optimal sight picture in a compact and lightweight design. Equipped with Shake Awake technology, this optic automatically activates when it detects motion and conserves battery life when idle with auto-off. The side-loading CR2032 battery tray ensures easy battery replacement, while the manual brightness controls offer flexibility with 10 daylight and 2-night compatible settings. The ARO-CORE is built to last with rugged aluminum housing finished in a low-profile matte black. Its IP67 water and dust resistance rating guarantees reliability in harsh environments, while the included 1.63" lower 1/3 co-witness mount and 1.05" low mount offer versatility across different rifle setups. Whether you're a professional or enthusiast, the Holosun ARO- CORE is engineered to provide superior performance in a user-friendly package.

Brand: HOLOSUN


Color: Green


Style: 2 MOA


Sport: Hunting, recreational shooting, target shooting, competitive shooting


Item Weight: 3.38 ounces


Material: Aluminum


Magnification Maximum: 1 x


Objective Lens Diameter: 22 millimeters


Magnification Minimum: 1 x


Compatible Devices: Rifle


Magnification Maximum: 1 x


Objective Lens Diameter: 22 millimeters


Magnification Minimum: 1 x


Compatible Devices: Rifle


Mounting Type: Picatinny Mount


Reticle Type: Dot


Item Weight: 3.38 ounces


Item Display Weight: 3.38 foot_ounces


Color: Green


Product Style: 2 MOA


Lens Color: Green


Material Type: Aluminum


Brand Name: HOLOSUN


Sport Type: Hunting, recreational shooting, target shooting, competitive shooting


Model Name: Advance Rifle Optic


Manufacturer: Holosun


Number of Items: 1


Unit Count: 1 Count


UPC: 810047073604


Global Trade Identification Number: 04


Included Components: 1.05" Cowitness Picatinny Mount, 1.63" Cowitness Picatinny Mount, Advance Rifle Optic, Lens Cleaning Cloth, Windage & Elevation Multi-tool


Model Number: ARO-GR2-Holosun


Manufacturer Part Number: Advance Rifle Optic-RD2


Warranty Description: Limited Lifetime Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Clear Dot with Astigmatism
Color: Red Style: 2 MOA
Clarity Even with my astigmatism, the dot on this appears very clean and crisp, better than any other I've seen other than one from Primary Arms. I've heard the two brands are made in the same factory, so it makes sense. Even if you have astigmatism, you shouldn't hesitate to buy this. You may be surprised how little it blooms. The glass is also very clear and the window is a good size. Price I'm willing to say this is the best deal on a red dot out there right now. Zeroing Positive clicks, solid tracking, zeroed quickly with no issues. Weight Feels like nothing on the rifle but also feels well-built and rugged. Height Standard mount is lower 1/3 cowitness, which is perfect. Also comes with a low mount. Overall For the practical and economical, you can't beat it. ... show more
Reviewed in the United States on April 24, 2026 by Jonathan O'Brien
    • Outstanding
Color: Red Style: 2 MOA
Great basic red dot. Excellent durability, I own two now and have not experienced any kind of malfunction. Clear glass, bright dot, no frills. Can't beat it for the price.
Reviewed in the United States on July 18, 2026 by Amazon Customer
    • New Standard for Affordable Red Dot Sights
Color: Red Style: 2 MOA
The Holosun Advanced Rifle Optic really stands out as the new standard for basic red dot sights that don’t break the bank. It delivers excellent performance without the premium price tag. The 22mm optical window gives a clear, unobstructed view, and the Shake Awake feature keeps the sight ready whenever you need it. With 12 brightness settings, it’s easy to get the perfect dot visibility in all lighting conditions. I also appreciate that it comes with both co-witness and low mounts, making it versatile and easy to install on different platforms. Overall, this sight feels solid, reliable, and well-built — a great value for anyone who wants quality performance without spending a fortune. Highly recommended! ... show more
Reviewed in the United States on January 9, 2026 by George B.
    • Great value for your dollar
Color: Red Style: 2 MOA
The value is excellent, the quality is great the clarity is clear, the dot is pretty crisp, you get well above what you pay for. The finish is very well done the buttons are clicky and tactile, the mount is solid, there is a lot being done right here and Holosun has had ywars to fine tune their dots to get you this product at a good price. I didnt get a chance to really test durability, but it seems built absolutely solid and rugged, I dont doubt it will survive some nasty drops. It is compact, with a relatively thin bezel around the lens, and it seems to magify pretty decently for its budget oriented peice class of shooting at further distances is your thing. ... show more
Reviewed in the United States on July 10, 2026 by Red
    • Great green dot scope.
Color: Green Style: 2 MOA
An excellent green dot! Easy to install and zero.
Reviewed in the United States on August 23, 2026 by Bud Riviere
    • Good buy for a budget optic.
Color: Red Style: 2 MOA
It’s pretty good, tbh, good enough. Mine has been on a rifle for about 4 months now and maybe 1000rds. Build quality is great, the new base is so much better than the old holosun mounts, no reason to swap mounts anymore. Body looks great and the glass is nice and clear. That said, the dot is not as sharp as my older holosuns and there is a good bit more glare at higher brightnesses. The old 503gu is a better red dot overall, but this was cheap and still works great. Starting to the 1x micro prism optics are overall better for this type of setup. ... show more
Reviewed in the United States on July 18, 2026 by Scott
    • Dot is crisp and they hold zero like the best of them.
Color: Red Style: 2 MOA
Fantastic!! I bought 1 and liked it so much I purchased a 2nd. I have 1 on a 12.5" 5.56mm and 1 on an AR9 7".
Reviewed in the United States on August 19, 2026 by jeff poage
    • Budget price, beast performance
Color: Red Style: 2 MOA
Great dot. Holosun does it again! Turrets are tactile, dot is crisp, minimal glare when sun is hitting the front glass head on. And the mount is like a knockoff geissele. You finally can buy the dot and use the included mount (the old OEM mounts were flimsy trash)!
Reviewed in the United States on July 11, 2026 by Chaz Colucy

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