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AT3 RD-50™ Micro Red Dot Reflex Sight

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


MSRP: $88.99


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

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Customer Reviews

Based on 55 reviews
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!
Open box RD-50 SCORE

First time buyer from AT3 Tactical, been watching, reading and impressed with what I've seen. I got the email for the open box return and saw a few items I decided to try out. Prices were very competitive if not beating the others. Ordered the products, 3-5 day shipping and arrived in 3, impressed with AT3 and USPS. I haven't had the chance to mount and zero the RD-50 Red Dot Sight, but it'll wait for now, and the products I purchased looked like brand new.. Truly impressed with AT3 Tactical, and definitely not the last purchases from them. (Lastly, it came with an extra battery)

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

you guys are GREAT i plan yo replace all other red dots with yours for the whole family as grandpa gets the money. I have replaced 12 already.
great service THANKS

Thanks for sharing your feedback, Earl. We're glad you're satisfied with your purchase. Cheers!
Very nice, light and easy to install optic

I already had two of these very light, impressive, low-cost RDS and when I saw them on sale again with even a better price, I jumped on it. And, again, the shipping was fast and both of my two new (open box) optics arrived in great shape. Both dots are fine, even with astigmatism, and look good, especially on lower settings. I don't think there is a better priced, quality optic with a lifetime warranty on the market today.

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