Primary Arms Advanced Micro Dot With Removable Base, Rotary Knob and 50k-Hour Battery Life - FDE (ETA October)

Manufactured by Primary Arms
2 Reviews


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The Microdot, Removable Base, Advanced sight in Flat Dark Earth (MD-RB-AD-FDE) takes everything we learned from our best selling MD-ADS microdot and refines it a step further. MD-RB-AD-FDE features an estimated 50,000 hours of battery life from the included CR2032 battery, powering an ultra-sharp 2 MOA dot. Fully multicoated lenses and an ultra-low profile emitter ensure a clean sight picture with minimal lens tint. Eleven brightness settings are controlled by the rotary knob on the right side. The first two settings are compatible with night vision units and cannot be seen by the naked eye. The brightest settings are daylight bright. The illumination knob physically stops at “0” with the red dot turned off.

Covered by the Primary Arms lifetime warranty, MD-RB-AD-FDE is designed for use on heavy recoiling firearms such as shotguns. Constructed of 6061 aluminum throughout, MD-RB-AD-FDE features a ceramic coat Flat Dark Earth finish. Waterproofing is improved over previous models—for example, the turret caps are now aluminum instead of plastic and tighten down around the waterproofing O-rings until metal-to-metal contact with the scope body. When removed, the turret caps can be used to adjust windage and elevation.

MD-RB-AD-FDE comes with a removable 1913 MIL STD Picatinny base. With the base removed, the scope body is compatible with industry standard micro mount systems, enabling MD-RB-AD-FDE to be mounted correctly on a wide variety of firearms.



Battery Life50000 Hours
Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Brightness11 Settings
Click Value1 MOA
FinishCeramic Topcoat
Manufacturer.Primary Arms
MaterialAluminum - 6061
Night Vision CompatibleNight Vision Compatible
Reticle2 MOA Dot
Reticle ColorRed
Weight5.5 Oz

Ratings & Reviews

2 reviews

  • 4 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

A serious contender to Aimpoint, at a quarter the price


I have two of these, several Aimpoints, and the previous Primary Arms (PA) micro dot. While the previous PA was excellent, I always had concerns that the buttons could be a failure point. This dot uses the same dial design as Aimpoint, and should be very reliable. It also includes a lifetime no-questions warranty, which Aimpoint does not.
<br>The one downside of this compared to the previous PA is the glass has slightly more red glare and emitter reflection, however it's still better than the Aimpoint H1, which has much worse glare and reflection.
<br>The knob is stiff, but it needs to be so it doesn't accidentally rotate, and it loosens up with use. The Aimpoint dial is also stiff. The dial is on the right, just like an Aimpoint, so it's not blocking your eye sight.
<br>This is, all in all, the best micro dot on the market and my go-to. The battery life is on par with Aimpoint, warranty is better, glass is clearer, and not only is it much cheaper, it's even cheaper than its predecessor.


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Just installed and already have a few dislikes.It is a nice solid piece of equipment and seems to be well made, but why the right side knob? You hold your gun with right hand. The 11 settings start with infrared and dimmest and it takes two turns of wrist to get to brightest. Knob is very stiff and I dont think it would turn with gloves on. If you order the riser mount, it is black, not flat dark earth.