AT3 RD-50™ Micro Red Dot Reflex Sight

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Accurate. Dependable. Unbeatable Value in a Small Package.

Featuring a crisp 2 MOA red dot reticle, waterproof housing with shockproof internals, and weighing in at only 3.6 ounces, the AT3 RD-50 Red Dot sight is optimized for the AR platform, but also ideal for shotguns, handguns, hunting rifles, and any other weapon with a Picatinny or Weaver rail system.

Buy on Amazon AT3 RD-50™ Micro Red Dot Reflex Sight w/ Optional Riser Mount



  • 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.
  • CR2032 Lithium battery included.
  • Factory-direct pricing – no distributor markup.
  • Backed by the Lifetime AT3 Warranty. We stand behind our products!

Inside the box:

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

Red Dot Sight Technical Specs

  • Power / Obj. Lens: 1x23mm
  • 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 (Battery Included)
  • Battery life: up to 50,000 hours on the 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 or Flat Dark Earth Coating

Frequently Asked Questions

Q: Do I need to use iron sights along with the RD-50 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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Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

AT3 Lifetime Warranty Logo

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

This includes AT3 Red Dot SightsHandguardsIron 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.

Customer Reviews

Based on 696 reviews
Dale Beymer
S&W Model 41 RD-50 Addition

Added the AT3 RD-50 Micro Red Dot to my newly acquired S&W Model 41 and so far am quite happy with the sight (only one outing to date). I can remove and replace the sight from the pistol and it repeats without having to adjust the sight. Nice product!

Thank you for taking the time to leave a review! We are thrilled to hear that you are enjoying your AT3 RD-50 Micro Red Dot on your S&W Model 41. It's great to know that the sight is repeating without needing readjustment. We hope you continue to have a positive experience with our product. Happy shooting!

James Stafford
Great red dot

Just picked this bad boy up, can’t wait to use it! First thoughts, things well built and the customer service is outstanding.

Most definitely want to read the directions and required specs to mount (20 inch pounds)

I sheared off the bolt by over-tightening by hand cause I’m a meat stick but customer service was fast to send me a replacement

All in all, I’m extremely happy with it and would purchase again for sure

Thank you for your review! We are thrilled to hear that you are enjoying our AT3 RD-50 Micro Red Dot Reflex Sight. We always strive for excellent customer service and are happy to hear that we were able to quickly assist you with a replacement bolt. Thank you for choosing our product and we look forward to serving you again in the future. Happy shooting!

Rick Carman
RD-50 Pro.

Great optic, nice clear sight picture that absolute co-witnesses with my backup flip up sights. The dot is crisp and easy to find.

Thank you for your feedback on the AT3™ RD-50 PRO™ Micro Red Dot with Cantilever Riser Mount. We are glad to hear that you are enjoying the clear sight picture and crisp dot, as well as the co-witness with your backup flip up sights. We strive to provide high-quality products that meet the needs of our customers, and we are happy to know that we have met your expectations. Thank you for choosing AT3 Tactical!

Affordable, rugged, simple

Can’t beat it for the price and I love the compact yet rugged sight.

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

Lee Meza
I own multiple of these

I bought my first RD50 after watching a YouTube review with a guy torture testing a rifle with one on it. In that video, no matter how bad he treated the gun, his RD50 held zero and kept functioning flawlessly. I have since purchased 2 more, a pistol reflex sight from AT3 and am considering another RD50. In my opinion this is the best product of its type in its price range. Hands down.

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