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Questions & Answers
Will this sight work on a mp5 clone

Yes as long as it have a rail to mount to this optic will work on it.

by gray, Verified Owner, December 7, 2025
Does this only come with the 1/3 mount or does it come lower mounts as well?

Yes it comes with the low mount as well

by Michael Schenk, Verified Owner, November 20, 2025
Customer Reviews
Helpful Positive Review
Nice optic by Tom, Verified Owner, January 1, 2026
I use this on my 9mm Stern Defense AR conversion. Easy set up and the optic is nice and clear.
2/2 found this helpful
Helpful Positive Review
A awesome budget optic! by Darklurker1986, Verified Owner, December 30, 2025
Running this on a carbine. For the price you could not ask for more. Holosun is the way to go!
1/1 found this helpful
Helpful Positive Review
Great Budget Option by Izzy, Verified Owner, January 5, 2026
Recently bought it for my budget AR-15. The Holosun ARO does what it says it does. No complaints on the install, build, or quality. My only regret is that I should have bought the bundle with the magnifier.
1/1 found this helpful
Helpful Positive Review
dot only, extremely sensitive motion sensor by Stebanoid, Verified Owner, November 15, 2025
First of all, the photos are misleading - the last picture shows 2 reticles, but the model I got supports only "dot". If you want 2 reticles (as I wanted) you need to order ARO-MRS-RD/GR/GD (not the presense of MRS in the name). If there is no MRS, i...
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1/3 found this helpful
Helpful Positive Review
Nearly perfect right out the box by Frankie Santillan, Verified Owner, November 22, 2025
Installed it on my AR9, checked it with my laser, and it just needed a few clicks to the side. Took it out and I was nailing targets. The green dot took a second to get used to but it feels great. Now I'm debating getting another one for my shotgun
1/1 found this helpful
Helpful Positive Review
Holosun Green Dot by machinist419, Verified Owner, July 1, 2025
Great cheap dot for a PCC! I even went out to 100 yards and shot steel with it. It’s definitely a fun little dot!
2/2 found this helpful
Read All 27 Reviews
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Product Info for Holosun ARO Advanced Rifle Optic 1x22mm Reflex Red Dot Sight

ARO (Advanced Rifle Optic) is an advancement on our popular 20mm 403 and 503 series optics. ARO features an all-new 22mm housing design that mates perfectly with our magnifier series, an all-new 1.63 lower 1/3 co-witness pedestal mount, and compatibility with a new lens cover and anti-reflection device system (available separately). The ARO series is available as a 2MOA dot only or with our Multi-Reticle System (MRS) in Red, Green, or Gold dot colors.image

Specifications for Holosun ARO Advanced Rifle Optic 1x22mm Reflex Red Dot Sight:

Manufacturer: Holosun
Color: Black
Fabric/Material: Aluminum
Magnification: 1 x
Objective Lens Diameter: 22 mm
Reticle: 2 MOA Dot
Brightness Settings: 12
Eye Relief: Unlimited
Adjustment Click Value: 0.5 MOA
Battery Type: Lithium Metal, CR2032
Battery Life: 50000 hours
Water Resistance Level: IP67
Weight: 3.38 oz
Red Dot Sights-Footprint: Not Applicable

Package Contents:

  • Holosun ARO Advanced Rifle Optic 1x22mm Reflex Red Dot Sight

Holosun ARO Advanced Rifle Optic 1x22mm Reflex Red Dot Sight Orderable Models

List of Orderable Models

  • Holosun ARO Advanced Rifle Optic 1x22mm Reflex Red Dot Sight, Red 2MOA Dot Reticle, Black, ARO-RD2 , MPN: ARO-RD2 , UPC: 810047073598 , Code: 28Y-RD-ARO2-ARO-RD2
  • Holosun ARO Advanced Rifle Optic 1x22mm Reflex Red Dot Sight, Gold 2MOA Dot Reticle, Black, ARO-GD2 , MPN: ARO-GD2 , UPC: 810047073611 , Code: 28Y-RD-ARO2-ARO-GD2
  • Holosun ARO Advanced Rifle Optic 1x22mm Reflex Red Dot Sight, Green 2MOA Dot Reticle, Black, ARO-GR2 , MPN: ARO-GR2 , UPC: 810047073604 , Code: 28Y-RD-ARO2-ARO-GR2
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