AT3 ARO Combines Largest Viewing Area with Smallest Housing
Features
- Largest viewing area of AT3’s red dot sights in smallest housing
- Doctor/Fastfire/Venom mounting pattern for pistol compatibility
- 3 MOA crisp red dot for accurate shooting
- 6 brightness settings for all lighting conditions
- Multi-coated scratch-resistant lenses
- Parallax-free design maintains accuracy
- Waterproof and shockproof circuitry
- 5,000-hour battery life at medium setting
- 6-hour auto shut-off
- Includes rubber lens cover
The ARO addresses the size versus viewing area compromise found in other micro red dots by maximizing the window while minimizing the housing footprint. This design allows it to fit optics-ready pistol slide cuts while providing an unobstructed sight picture. The Fastfire/Venom footprint ensures compatibility with the widest range of pistols, rifles, and shotguns using adapter plates or direct mounting.
Specifications
- Brand: AT3
- Model: ARO Red Dot Sight
- Magnification: 1x23mm
- Reticle: 3 MOA Red Dot
- Mounting Pattern: Doctor/Fastfire/Venom
- Length: 1.9″
- Width: 1.1″
- Height: 1.2″
- Weight: 1.8 oz
- Objective Lens Area: 23mm x 21mm
- Battery: CR1632 (included)
- Battery Life: 5,000 hours at medium setting
- Auto Shut-off: 6 hours
- Brightness Settings: 6
- Adjustment Range: +/- 50 MOA
- Click Value: 1 MOA per click
- Eye Relief: Unlimited
- Parallax: Fixed, parallax-free
- Body Material: 6061 Aluminum
- Finish: Matte black anodized
- Waterproof: Yes
- Fogproof: Yes
- Shockproof: Yes (500g certified)
- Night Vision Compatible: No
What’s Included?
- 1x ARO Red Dot Sight
- 1x Rubber Lens Cover
- 1x CR1632 Battery
- 1x Low Picatinny/Weaver Mount
- 1x Instruction Sheet
- 1x Lens Cloth
- 1x Allen Wrench for Windage Adjustment
- 1x Torx Wrench for Mounting Screws
- 1x Flathead Screwdriver for Battery Cap
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 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.
Q: What is the recommended torque for the top screws that thread into the mount? Do I need Loctite/threadlocker?
A: We recommend no more than 12 inch-lbs for torque on the two top screws, no matter what you’re mounting the ARO to. You do not necessarily need threadlocker, but it is highly recommended, especially on handguns. A small drop of Blue Loctite or equivalent medium threadlocker on each screw will suffice.
AT3’s Most Versatile Red Dot
The ARO Reflex Sight is able to be directly mounted to many popular “Optics Ready” pistols on the market that utilize a Burris Fastfire/Vortex Venom mounting pattern – either directly on the slide or via an adapter plate. Here is a list of pistols that the ARO is compatible with. This may not be a complete list. If you know of another pistol that the ARO fits on, please email us that information at support@at3tactical.com. If you have specific questions about the ARO fitting on any pistols, please contact the gun manufacturer directly.
Doctor Optic Firearm Compatibility
Also known as Docter, Noblex, Burris FastFire, Vortex Viper, open-emitter Vortex Venom, Meopta, Insight, etc.
This optics compatibility chart is continuously updated based on the latest available information, but firearm and optics platforms evolve rapidly. If you notice your firearm isn’t listed below, please reach out to us directly: Contact Us.
Doctor Footprint Compatibility Notes:
– Direct Mount: Mounts Directly to Slide
– Mounting Plate Required: Purchased Separately
– Mounts with Factory Adapter Plate: Included With New Firearm Purchase
– Note: Older/open-emitter Vortex Venom optics use this footprint family. Newer Vortex Venom Enclosed optics use a different footprint and should not be assumed compatible with Doctor/Venom plates.
BERETTA
Mounting Plate Required:
Mounting Plate: APX A1 Full Size RDO, APX A1 Tactical, APX A1 Carry Optics Ready, M9A4, M9A4 Compact, M9A4 Centurion, 92X RDO Full Size, 92X Performance, 92XI Optics Ready Models, 90 Series RDO Models
CANIK
Mounts with Factory Adapter Plate:
TP9SFX, TP9 Elite Combat, TP9 Elite Combat Executive, SFX Rival, SFX Rival-S
CZ / DAN WESSON
Mounting Plate Required:
Mounting Plate: CZ P-10 C Optics Ready, CZ P-10 F Optics Ready, CZ P-10 S Optics Ready, CZ Shadow 2 Optics Ready, CZ Shadow 2 Compact Optics Ready, Dan Wesson DWX Optics Ready, Dan Wesson DWX Compact Optics Ready
FN
Mounts with Factory Adapter Plate:
FN 502 MRD, FN 502 Tactical, FN 509 MRD, FN 509 Fullsize MRD, FN 509 Midsize MRD, FN 509 Compact MRD, FN 509 Tactical, FN 509 Compact Tactical, FN 509 LS Edge, FN 509 CC Edge, FN 509 CC Edge XL, FN 510 MRD, FN 510 Tactical, FN 545 MRD, FN 545 Tactical, FN Five-seveN MRD, FNX-45 Tactical, FN 309 MRD
GLOCK MOS
Mounts with Factory Adapter Plate:
G17 Gen5 MOS, G19 Gen5 MOS, G19X MOS, G20 Gen5 MOS, G21 Gen5 MOS, G22 Gen5 MOS, G23 Gen5 MOS, G26 Gen5 MOS, G29 Gen5 MOS, G30 Gen5 MOS, G34 Gen5 MOS, G40 Gen4 MOS, G41 Gen4 MOS, G45 MOS, G47 MOS, G49 MOS, G17L Gen5 MOS
Gen 4 Legacy / Limited-Availability MOS Models:
G17 Gen4 MOS, G19 Gen4 MOS, G34 Gen4 MOS, G35 Gen4 MOS
HECKLER & KOCH / HK
Mounting Plate Required:
Mounting Plate: VP9 Optics Ready, VP9 Tactical OR, VP9L OR, VP9 Match, VP9SK Optics Ready, VP9A1 F, VP9A1 K, VP9A1 L, VP9A1 X
IWI
Mounts with Factory Adapter Plate:
IWI Masada, IWI Masada Tactical
Note: IWI’s Venom plate is for the older/open-emitter Vortex Venom footprint and does not fit the newer Vortex Venom Enclosed optic.
PSA
Direct Mount:
PSA Dagger Compact Fastfire Cut, PSA Dagger Full Size-S Fastfire Cut
Mounting Plate Required:
Mounting Plate: PSA Dagger Compact RMR Cut Slide, PSA Dagger Full Size-S RMR Cut Slide, PSA Sabre Dagger RMR Cut Slide
RUGER
Direct Mount:
Ruger American Pistol Competition
Mounting Plate Required:
Mounting Plate: Ruger Max-9 Optics Ready
SIG SAUER
Mounting Plate Required:
Mounting Plate: M17, M18, P320 X-Compact, P320 X-Carry, P320 X-Five Legion, P320 RX, SIG Romeo1Pro-cut slides
Mounting Plate: P320 X-TEN
Mounting Plate: SIG Romeo1-cut slides, P320 RX OR Romeo1, P320 X-Five OR Romeo1
Mounting Plate: P322 Optics Ready
Aftermarket Dovetail Mount Compatible:
Mounting Plate: P365X, P365XL
Mounting Plate: P226
SMITH & WESSON
Mounts with Factory Adapter Plate:
M&P9 M2.0 Optics Ready Full Size, M&P9 M2.0 Optics Ready Compact, M&P9 M2.0 Metal Optics Ready, M&P9 M2.0 Metal Carry Comp, M&P9 M2.0 Competitor, M&P9 M2.0 Carry Comp Optics Ready, M&P10mm M2.0 Optics Ready, M&P Performance Center C.O.R.E. Models
Aftermarket Dovetail Mount Compatible:
Selected M&P Full Size and Compact models when using the correct rear-sight replacement mount. Verify exact pistol model and rear sight cut before ordering.
SPRINGFIELD ARMORY
Mounting Plate Required:
Mounting Plate: Hellcat Optics Ready, Hellcat Pro Optics Ready
Mounting Plate: Echelon, Echelon Comp, Echelon 4.0C, other Echelon VIS models
Mounting Plate: XD-M OSP, XD-M Elite OSP, XD Mod.2 OSP, XD Mod.3 OSP
1911 DS Prodigy AOS, 1911 AOS models when using the correct Docter footprint AOS plate
TAURUS
Mounts with Factory Adapter Plate:
G3 Tactical T.O.R.O., G3 T.O.R.O., G3C T.O.R.O.
Mounting Plate Required:
TX22 Competition, TX22 Competition SCR
WALTHER
Mounting Plate Required:
Mounting Plate: Walther PDP Full Size, Walther PDP Compact, Walther PDP F-Series, Walther PDP Pro, Walther PDP Match, Walther PDP Steel Frame, Walther PDP Pro-X, Walther PDP Pro-E
Mounting Plate: Walther Q4 Steel Frame OR, Walther Q4 Tac M1, Walther Q4 Tac M2, Walther Q5 Match M1, Walther Q5 Match M2, Walther Q5 Match Steel Frame Standard, Walther Q5 Match Steel Frame Pro, Walther Q5 Match Steel Frame Standard 10RD
