AT3™ 4xRDM™ 4x Red Dot Magnifier with Flip-to-Side Mount
or 4 interest-free payments of $29.06 with
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
- Free standard shipping on orders $139+ details
- 90-day no-hassle returns policy
- Backed by the AT3 Lifetime Warranty! what it covers
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From orders that included this itemProduct description
Go from fast up close to precise at long range, with AT3’s new 4x Magnifier with QD Mount
Experience the latest and greatest AT3 Red Dot Magnifier, with a new Quick Detach mount and a crystal-clear 4x magnification for any AT3 Red Dot Sight.

Versatile
- Easy upgrade to extend the range of any red dot sight with 4X magnification
- Quickly transition between short- and long-range shooting scenarios. Just push the button and flip the magnifier over.
- Spacers are included for Absolute and Lower 1/3 Cowitness Red Dot Sights – whatever your sight height, the magnifier will work!
- The Quick Detach Mount means you don’t need to carry extra weight if the job doesn’t demand it – just flip the lever to add or remove
Accurate
- Crystal-clear multi-coated optics for a sharp sight picture
- Adjustment screws make it simple to center the red dot in the sight picture
- Fast focus adjustment ensures a crisp sight image
Durable
- Sturdy flip-to-side mount with a positive locking mechanism, made of durable 6061 T6 aluminum matte anodized finish
- The shockproof optic is built to withstand the recoil of any weapon, including shotguns and large-caliber rifles
- Scratch-resistant optical coating
- Backed by the AT3 Lifetime Warranty
Important fit note:
This magnifier is designed for use with the AT3 RD-50 PRO and LEOS Red Dot Sights, as well as many other sights that use riser mounts. The included spacers correspond to most “Absolute Cowitness” and “Lower 1/3 Cowitness” riser heights for red dot sights. Installation of either spacer is simple and allows you to have more accurate
Specifications:
- Magnification: 4x
- Objective Lens Diameter: 32 mm
- Height: 1.4in from the base center of the optic (Absolute Cowitness). With the use of the spacer, height is 1.57in
- Eye Relief: 2.5 in
- Exit Pupil: 7.0mm
- Field of View: 49 ft @ 100 yds
- Length: 4.6in
- Weight: 12oz with mount
- Optics Coating: Fully multi-coated
- Material – 6061 T6 anodized aluminum
- Included in the box: QD flip to side mount, 4X magnifier, Hex key, Stamped Wrench, Lens Cleaning Cloth, Spacers, and mounting screws
Customer reviews 30
AT3 Tactical · Thanks for bringing this to our attention. We apologize for any inconvenience caused by the rusting hinge on your magnifier. Please reach out to our customer service team and we will be more than happy to assist you with a replacement. We appreciate your feedback and hope to make things right for you. Thank you for choosing our product.
AT3 Tactical · Hi there, thank you for bringing this to our attention. We apologize for the inconvenience you experienced with the release button. Our team is looking into this issue and we will provide you with a solution as soon as possible. Thank you for your patience.
The clarity is good IMO and it does feel durable being made of metal.
Despite the above, I’m not upset about it and don’t plan to return it.
If I could go back in time I probably would have spent alittle but more money to get a less heavy optic with different flip mechanism (button sucks). But if it’s between this or nothing, then I would 100% recommend getting it. Having the ability to magnify your red dot is so nice and it’s able to hot-swap between your guns as needed without messing with the zero.
AT3 Tactical · Thank you for your feedback! We are happy to hear that you are enjoying our AT3™ 4xRDM™ 4x Red Dot Magnifier with Flip-to-Side Mount. If you have any questions or concerns, please don't hesitate to reach out to us. We are always here to help.
Questions & Answers 6
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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.




4xRDM Instruction Manual













