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AT3™ 4xRDM™ 4x Red Dot Magnifier with Flip-to-Side Mount

SKU: AT3-4XRDM

Out of Stock
Orders will Ship within 1 Business Day
Backed by the AT3 Lifetime Warranty!
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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

4xRDM Instruction Manual

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 24 reviews
75%
(18)
8%
(2)
8%
(2)
4%
(1)
4%
(1)
D
Daniel Gallagher
Can't get any better for the price.

This optic does everything that I expect it to do,and when it didn't AT3 had a new one to me in 3 days!

C
C.B.
Solid Start

I purchased the AT3 4x magnifier to run on CETME-C behind a Holosun 1-MOA red dot. It’s a love/hate relationship with the 4x. Glass is crystal clear, and the 1913 QD mount is firm on the rail. Biggest issue was finding a happy medium between eye relief and distance between magnifier and red dot. The flip-to-side function is stiff which, on one hand, is great and will not accidentally flip. On the other hand the button is in a tight spot even with a riser it’s a small struggle, but altogether operates as it should. The last issue I believe can be fixed by myself with a little thread lock and tension - the magnifier has some play inside the round clamps. This of course creates issues with holding zero, but something I believe I could fix. Overall the best features are the clear sight picture (once you find the eye relief) and the variable magnification. Looking forward to more AT3 products!

D
Doug Bennett
AT3™ 4xRDM™ 4x Red Dot Magnifier

These things work GREAT! I have several 3x & 4x magnifiers plus their Red Dots with Laser, and all work GREAT!

Thank you for the kind words! We are glad to hear that our products are serving you well.

J
Joseph D.
You get what you pay for

It is a 4x magnifier that works. It does the job but you can definitely feel it’s a “budget” option. It’s very heavy and the push button is very stiff. I left it compressed overnight to try to make it less stiff and it kinda worked but I realized that it doesn’t really matter because if you put any turning force on the optic before pressing the button fully, then the friction of the metal will cause the rotating joint to lock up and not flip with any amount of force. So you have to consciously fully depress the button and only then apply turning force on the body. Additionally the springs on the retaining slide thing have come out twice and I had to put them back in and I had to retighten some screws lest it slightly pivot right/left.

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.

D
Darryl Moultrie

Very nice.

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.

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