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AT3 ARO Micro Red Dot Sight with Low Riser Mount

AT3 ARO™ Micro Red Dot Reflex Sight with Optional Riser Mount


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Lifetime WarrantyOn All AT3 Brand Products

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.

This includes AT3 Red Dot Sights, Handguards, Iron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.

In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.

If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.

If your product is in need of warranty service, please contact AT3 Tactical to start the process

Our contact info is available here. To expedite processing, please provide your order information and description of the defect.

Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

AT3 ARO Micro Red Dot with 4xRDM Red Dot MagnifierBuy the AT3 ARO Red Dot Sight on Amazon!

The ARO (Adaptable Reflex Optic) Is AT3’s Smallest, Most Adaptable Red Dot Sight

Boasting the largest viewing area of AT3’s Red Dot Sights, the ARO can be used on just about any rifle platform.  As a primary or backup optic on your AR, a sleek reflex sight for your hunting rifle or shotgun, or even riding on a pistol slide adapter, the ARO can do it all – at a price that won’t break the bank.

Planning to mount your red dot on a pistol, shotgun, or other firearm?  Check out our selection of ARO-compatible mounting solutions here!

A Dot with a View

  • This is our smallest red dot sight, with the biggest viewing area – with none of the bulk of a standard tube
  • Multi-coated lenses are scratch resistant, and provide excellent image clarity
  • Crisp 3 MOA red dot allows for accurate, both-eyes-open shooting on any platform
  • Parallax free design: The red dot stays on target, no matter where the shooter’s eye is
  • 6 red dot brightness settings provide optimal visibility in any lighting conditions

Truly Adaptable

  • The ARO uses a Fastfire/Venom Style Mounting Footprint, and includes a removable Low Mount for Picatinny Rails
  • We also offer a .83″ Absolute Cowitness Cantilever Riser Mount – Ready for Duty with your AR15
  • Mount it on your rifle, shotgun, or pistol – the ARO is built to take on just about everything!
  • Waterproof circuitry ensures you’ll stay on target even in adverse conditions
  • Shockproof circuitry resists damage, even when the dot takes a beating – from impact or recoil

AT3 ARO Micro Red Dot with Top Loading Battery Cover

High Value, Light Cost

  • No other Micro Red Dot has an AR-ready riser mount at this price.
  • The ARO is factory direct – no markup from distributors.
  • Up to 5,000 Hours of Battery Life at Medium Brightness
  • CR1632 Lithium battery included.
  • Backed by the Lifetime AT3 Warranty. We stand behind our products!

About Riser Mounts

  • Low Mount – For Direct Mounting to Picatinny Rails
  • Med Profile .83” Riser Mount – for “absolute” cowitness with AR iron sights

Not sure what that all means?  Check our FAQ below!

Inside of the box:

  • ARO Red Dot Sight
  • CR1632 Battery
  • Low Picatinny Mount
  • Instruction sheet
  • Lens cloth
  • Allen wrench for Windage Adjustment
  • Torx Wrench for Mounting Screws
  • Flathead Screwdriver for Battery Cap
  • OPTIONAL: .83″ Absolute Cowitness Riser Mount

Red Dot Sight Technical Specs

  • Power / Obj. Lens: 1x23mm
  • Reticle: 3 MOA Red Dot
  • Lens Coating: Multi-coated
  • Weight: 1.8 oz
  • Mounting Length: 1.9 inch / 48 mm
  • Mounting Width: 1.1 inch / 28 mm
  • Height: 1.2 inch / 30 mm
  • Objective Lens Area: 23mm x 21 mm
  • Battery Type: CR1632 (Battery Included)
  • Battery life: Approximately 5,000 Hours on Medium Setting
  • Auto Shut-off: 6 Hours
  • Windage/Elevation Click Value: 1 MOA per click
  • Adj Range: +/- 50 MOA (total adjustment range 100 MOA)
  • Eye Relief: Unlimited
  • Parallax Adjustment: Fixed
  • Field of View: Unlimited
  • Night Vision Compatible: No
  • Nitrogen filled: Yes
  • Waterproof/Fogproof: Yes
  • Recoil resistance – Certified up to 500g’s. Certified for use with large-caliber rifles and shotguns, as well as “springer” airguns with 2-way recoil
  • Body material: 6061 Aluminum
  • Finish: Matte black anodized

ARO Cantilever Riser Mount Technical Specs

  • Mount Type: Burris Fastfire/Vortex Venom Footprint
  • Length: 1.6″
  • Material: Black Anodized Aircraft Aluminum
  • Saddle Height: .83″
  • Weight: 1.1 oz

Frequently Asked Questions

Q: How do I mount the ARO to my pistol?
A: The easiest way to mount the ARO to a pistol slide is by using an adapter plate in the Fastfire Pattern.  AT3 carries adapter plates that can be used simply by drifting out the rear sight of many popular pistols on the market.  The ARO may not fit in pistol slides cut specifically for Fastfire red dot sights.

Q: How do I know which riser mount to get?
A: For AR’s and other modern rifle platforms, we recommend the .83″ Mount if you are running without iron sights, since it puts the red dot at the standard height of mil-spec iron sights. If you’re running a shotgun, pistol, or any firearm with a “drop comb” where the cheek rest is lower than the top of the receiver, the Low Mount will serve you just fine.

If you go with the .83″ Mount, you’ll also get the Low Mount – if you plan to move the optic around multiple platforms, go with that option!

Q: Do I need to use iron sights along with with the ARO Red Dot Sight?
A: NO – Iron sights are not required to use this red dot sight! The red dot sight can be used on its own. Many people choose to use iron sights as a backup, but they are optional. This red dot sight will work great on “optics ready” rifles that don’t have any iron sights.

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Customer Reviews

Based on 26 reviews
great little red dot

this is a great little red dot sight, it has all the functions and features of the high priced sights at about 1/3 the price, and life time warranty,how can you wrong. I think at3 is a great little company.

Thanks for sharing your feedback, Robert. We're glad you're satisfied with your purchase. Cheers!
Nice sight

Sight works as advertised. Excellent sight for the money. The only negative was that I had to file the rail slot on a ruger mark IV rail to attach the sight.

Thanks for sharing your feedback, David. We're glad you're satisfied with your purchase. Cheers!
Nice little red dot

This is a nice red dot. Very solid construction and design. It is simple to operate with the push of a button to turn on, adjust brightness, and to turn off. The dot is precise and the optics clear. I mounted it on an AR using the optional absolute co-witness mount. It is solid and looks great.

Thanks for sharing your feedback, Ronnie. We're glad you're satisfied with your purchase. Cheers!
Good little optic, will not fit on Canik's mounting plates

Purchased this little optic for use in USPSA carry optics division, got it in the mail, excited to put it on my Canik TP9SFX, place on mounting plate and the holes do not line up. It can sit on the plate on the pegs but can not be screwed down. SO if you are looking to mount this on your Canik, you would have to look into a different site.

Thanks for sharing your feedback, Stephen. We're glad you're satisfied with your purchase. Cheers!
Doesn’t fit Canik

The product looks well built and looks to be of very good quality. However, when I went to mount it on my Canik. No go. Fits the “m.o.s” perfectly but the optic is positioned too far back on the plate to seat down in the slide. I am willing to mill the slide, but most people are not willing to do that. This is something that needs to be pointed out in description of product.

Thanks for taking the timeout to share your review, G. We'll make sure to put this on the product description. We appreciate your feedback.

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