AT3 RD-50™ Micro 2 MOA Red Dot - Low Picatinny Mount
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- 90-day no-hassle returns policy
- Backed by the AT3 Lifetime Warranty! what it covers
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Product description
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.
Accurate
- 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.
Dependable
- 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
RD-50 Instruction ManualFrequently 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.
All 2 options on this page
- AT3 RD-50™ Micro 2 MOA Red Dot - Low Picatinny Mount - Color: Black SKU RD-50-0 · UPC 783935100051
- AT3 RD-50™ Micro 2 MOA Red Dot - Low Picatinny Mount - Color: Flat Dark Earth SKU RD-50-0-FDE · UPC 5060748421906
Customer reviews 184
Verified buyer Tldr: Want a red dot that actually works without breaking the bank? Look no further than this at3 red dot here
AT3 Tactical · Thank you for your review! We're so glad to hear that you had a great experience with our AT3 RD-50 Micro Red Dot. Our goal is to provide high-quality products that make shooting easier and more enjoyable. We hope you continue to enjoy using it and we appreciate your support. Happy shooting!
I've only put about 25 240gr rounds down range with it installed and zeroed and it's good. The brightness control (11 settings) is really good, although a bit tight, but I'm sure that will loosen a bit over time. No noticeable distortion near the edges and the glass is clear.
Couldn't really ask for more especially with the warranty. I will be getting a few more for other platforms.
Great job AT3!
AT3 Tactical · Thank you for your positive feedback! We are glad to hear that you are satisfied with our AT3 RD-50™ Micro Red Dot Reflex Sight. We take pride in providing high-quality and durable products at an affordable price. We hope you continue to enjoy your RD50 and thank you for choosing us for your scope needs. Happy shooting!
AT3 Tactical · Thank you for your review! We're glad to hear that you're enjoying our AT3 RD-50 Micro Red Dot Reflex Sight. We strive to provide the best products at an affordable price, and we're happy to know that we hit the mark for you. Thank you for choosing AT3 and happy shooting!
Questions & Answers 4
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Do you have any red dot sights that will fit an air pistol? Thank you
Larry Tibbs · Jan 30, 2026AT3 Support Team — Do you have any red dot sights that will fit an air pistol? Thank you
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I have an AR pistol with Magpul backup polymer sights on the PIC rail. How will your red dot co witness with these sights? Caliber is 5.56 so recoil should not be a factor here. Your reviews are super on this item. Second question is how a second one might mount on t Mossberg 500 20 gage shotgun which is factory stock? Thanks!
John · Jan 10, 2026AT3 Support Team — The AT3 RD-50™ Micro 2 MOA Red Dot with Low Picatinny Mount provides absolute co-witness with Magpul polymer backup sights on your 5.56 AR pistol—the dot aligns directly over the front post. Its low 1.41" height-over-bore matches standard AR irons perfectly for quick transitions. Recoil's no issue with 5.56!
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Will the RD-50 mount directly to an 11mm dovetail rail or is an adapter required? If an adapter is required, what would you recommend?
David · Apr 7, 2025AT3 Support Team — The AT3 Tactical RD-50 is designed to mount on standard Picatinny rails, which are commonly found on AR-15 rifles and other tactical platforms. However, if you're looking to mount it on an 11mm dovetail rail, you will need an adapter.
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Do I need a higher riser for iron site co witness?
Mike Heneghan · Dec 24, 2024AT3 Support Team — If you want to achieve an absolute co-witness with your iron sights, you should use the 0.83" riser. If you prefer a lower 1/3 co-witness setup, then the 1" riser would be appropriate.
Warranty & returns
Backed by the AT3 Lifetime Warranty!
All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.
This includes AT3 Red Dot Sights, Handguards, Iron 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.
90-day no-hassle returns
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.
