0 Cart
Added to Cart
    You have items in your cart
    You have 1 item in your cart
    View Cart / Checkout Continue Shopping

    We Ship Fast!

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

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

    Rugged and Reliable, New and Improved.  Premium Features and Outstanding Value.

    The best value in red dot sights just got even better. Optimized for the AR-15, the AT3 RD-50 PRO pairs the tried-and-true RD-50 red dot sight with a NEW lightweight riser mount and armored cover with built-in lens caps.

    Click here for the Classic RD-50 without a Riser Mount


    • The New PRO-MOUNT Cantilever Mini Riser mounts secure to your AR, ensuring you get on target faster, and stay on target no matter what.
    • Multi-coated lenses are scratch resistant, and provide excellent image clarity
    • Crisp 2 MOA red dot allows for accurate, both-eyes-open shooting.
    • Parallax free design: The red dot stays on target, no matter where the shooter’s eye is
    • 11 red dot brightness settings provide optimal visibility in any lighting conditions

        Tough As Nails

        • Now with RD-ARMOR – A rubberized cover to protect the body and lenses of the sight!  The integrated lens caps snap together easily with one hand operation.
        • Rubber gaskets on the turrets and battery cover keep the red dot completely waterproof, even with the RD-ARMOR off!
        • Nitrogen purging ensures the 6061 T6 aluminum body resists fogging and moisture.
        • Shockproof circuitry resists damage, even when the dot takes a beating.

          Incredible Value

          • No other Red Dot has a Riser and Cover at this price.  This is the Best Red Dot Under $100!
          • The RD-50 PRO is factory direct – no markup from distributors.
          • Up to 50,000 hours of battery life at the lowest setting
          • Genuine Renata™ CR2032 Lithium battery included.
          • Backed by the Lifetime AT3 Warranty. We stand behind our products!

              About Riser Mounts

              • Med Profile .83” Riser Mount - for “absolute” cowitness with AR iron sights (Most Popular Option)
              • Hi Profile 1” Riser Mount - for “lower 1/3” cowitness with AR iron sights

              Not sure what that all means?  Check our FAQ below!

              Inside of the box:

              • Red dot sight
              • RD-ARMOR Cover with Lens Caps
              • PRO-MOUNT Cantilever Riser Mount
              • 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

                PRO-MOUNT Cantilever Riser Mount Technical Specs

                • Mount Type: Picatinny or Weaver Rails
                • Length: 1.6"
                • Picatinny Rail: 3 Slots
                • Material: Black Anodized Aircraft Aluminum
                • Saddle Height: 1" and .83" available
                • Weight: 1.1 oz 

                    Frequently Asked Questions

                    Q: How do I know which riser mount to get?
                    A: For AR's, we generally 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 using this with iron sights, we recommend the 1" mount for "lower 1/3 cowitness". (See below graphic for an explanation of cowitness types)

                    Cowitness Types

                    The .83" mount is the most popular option, but many people prefer the 1" mount as it allows more versatility when combined with iron sights.

                    Q: Do I need to use iron sights along with 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.

                      Have Questions About this Product?

                      Ask Us Now

                      Customer Reviews

                      Based on 260 reviews
                      Really nice sight

                      The sight was smaller than expected, but comparable to others. The dot was clear and the optics did not distort anything. The controls were easy to work and the sight adjustment clicks were crisp. The sight held zero the entire day, shooting full auto (9mm) on a Sterling SMG. There were no times that the dot flickered or varied in intensity. I was pleased with the 0.83 inch riser mount. The rail screw does not clear much over the rail, so I was able to use my iron sights by looking through the rail.
                      Only one problem, the sight mounting base has 2 springs that hold the picatinny fastener. I must have bent one of the springs while mounting - had to remove it. However, this only seems to be added to maintain control of the rail fastener - not for holding zero. Would like to know the size of the springs for replacement.
                      Good sight for the money - solid performance.

                      Thanks for sharing your experience, Richard. We can send you an extra mounting hardware please get in touch with us through email - AB
                      AT3 RD50

                      Best little red dot for the money and fast shipping!! this is my third one!!!

                      Thanks for choosing AT3, Mark. We work hard to meet expectations like yours, we're glad we hit the mark for you. Cheers! - AB
                      RD50 red dot and 3x magnifier

                      Great products for the pice.

                      Thanks for sharing your feedback, Frederick. We're glad you're satisfied with your purchase - AB
                      The sight for a pistol

                      This sight works great on my built pistol. Just wish the rain coat covers were easier to secure

                      Thanks for sharing your experience, Peter. Your comments were noted, we'll continue working hard. - AB
                      Christmas Present

                      Cannot review on the operational merits of the sight because it was purchased as a Christmas present for my grandson. However, company service and correspondence was exceptional.

                      Thanks for sharing your experience, Charles. We work hard to meet expectations like yours, we're glad we hit the mark for you. - AB