We Ship Fast!

Order by 1PM CST for Same Day Shipping (Mon-Fri)

AT3 RD-50™ Micro Red Dot Reflex Sight

OPEN BOX RETURN AT3 RD-50™ Micro Red Dot Reflex Sight with Optional Riser Mount


Out Of Stock

90 Day No-Hassle Returns We Pay Return Shipping

We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at support@at3tactical.com and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at support@at3tactical.com. We may direct you to pursue your warranty claim directly with the manufacturer.

Your satisfaction is our #1 priority

If you’re dissatisfied with your purchase, in any way, please contact us at support@at3tactical.com – we will do our best to make it right.

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.


Returned items may be scuffed or scratched, packaging may be damaged. Guaranteed functional + lifetime warranty!

Accurate. Dependable. Unbeatable Value in a Small Package.  Now with your choice of Clearance Riser Mount!

Only 3.6 ounces and 2.4 inches long, the AT3 RD-50 Red Dot sight is specifically optimized for the AR platform, but also ideal for shotguns, handguns, hunting rifles, and any other weapon with a picatinny rail.


  • Crisp 2 MOA red dot allows for accurate, both-eyes-open shooting.
  • Parallax free design: The red dot stays on target with following the movement of the user’s eye.
  • 11 red dot brightness settings provide optimal visibility in any light conditions.
  • Multi-coated, scratch resistant amber lens provides enhanced image clarity.


  • Fully waterproof, with rubber gaskets on turrets and battery cover.
  • Nitrogen filled 6061 T6 aluminum body resists fogging and moisture.
  • Matte black anodized finish resists scratches while keeping a stealthy profile.
  • Shockproof circuitry resists damage from rough handling.

Unbeatable Value

  • Exceptional battery life – up to 50,000 hours at the lowest brightness setting.
  • Genuine Renata™ CR2032 Lithium battery included.
  • Factory direct pricing – no distributor markup.
  • Backed by the AT3 Lifetime Warranty. We stand behind our products!

Inside of the box:

  • Red dot sight
  • Rubber bikini cover
  • Instruction sheet
  • Lens cloth
  • Allen wrench

Red Dot Sight Technical Specs

  • Power / Obj. Lens: 1x25mm
  • Reticle: 2 MOA Red Dot
  • Lens Coating: Multi-coated
  • Weight: 3.6 oz
  • Mounting Length: 1.1 inch / 28 mm
  • Total Length: 2.4 in / 61.8 mm
  • Exit Pupil: 22mm
  • Battery Type: CR2032 (Renata™ CR2032 Battery Included)
  • Battery life: up to 50,000 hours on lowest setting. Approx. 5,000 hour with typical use
  • Windage/Elevation Click Value: 1 MOA per click
  • Adj Range: /- 35 MOA (total adjustment range 70 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

Have Questions About this Product?

You have not viewed any product yet!

Customer Reviews

Based on 58 reviews
Got Me Into Delta Force

My AT3 open-box RDS got me through Army of Northern Virgina & SFOD-D selection. As soon as the selection instructors peeped game on my frugal pew-pew optics they knew I, and the AT3 RDS, were the real deal. With this little puppy on your blunderbuss you'll hit the same hole so much that your girl will be jealous of your targets. Oh! You want sub-MOA out to 600 yards? Check, player! How does sub-second-of-angle sound? Betcha didn't even know sub-SOA existed! But, ssshhhhh. We don't want the Ruskies learning about that wizardry.
Obviously I'm well pleased with this sight. The only way to make it better is if it had a hole where I could stick my... anyway, it's a great, inexpensive RDS. I recommend buying at least 17 of them.

Thanks for sharing your feedback, Christian. We're glad you're satisfied with your purchase. Cheers!
AT3 Red dot review

Came very quickly, even though it was right at the Christmas rush time, boxed beautifully, just as described, super price.

Thanks for sharing your feedback, Ron. We're glad you're satisfied with your purchase. Cheers!
red dot sight RD-50

awesome sight not a mark on will definitely buy more

Thanks for sharing your feedback, Brent. We're glad you're satisfied with your purchase. Cheers!
Damn Thing Sure Held 0

I'll say, damn good job AT3 Tac! This little bastard kept me opening wide holes on the paper; I say wide because I was excited breaking my first build's cherry and it had been some time since I pulled a hot trigger, so I was off some, yet the hole I broke through that paper was consistent. You should be expecting another purchase, a buddy who gave my Black Betty a finger in the hole plans to buy one of y'all's optics. My RD-50 held zero through approximately 450 rounds for her first go in the range sack, yeah, boy howdy, I'm satisfied, mmm good shooting!

Thanks for sharing your feedback, Shaun. We're glad you're satisfied with your purchase. Cheers!
great optic

worked great. I will have to order a riser mount for it but that is my fault for buying just this item. shipped very fact and arrived early

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