Primary Arms MD-RBGII Classic Series Gen II Removable Microdot Red Dot Sight

Manufactured by Primary Arms
MPN: 810011
Manufactured by Primary Arms
224 Reviews

In Stock

Standard orders will ship out 2 business days if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

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The Classic Series™ proves that entry-level optics don’t have to be poor-quality optics. Unlike some other brands, we don’t use the word “value” as a euphemism for “junk”. Classic Series scopes are perfect for the budget-conscious and the new shooter. We take the time to 100% inspect every product in our facility here in Houston to ensure you are receiving the best quality product as our other three tiers. These scopes are backed by the same excellent customer service and support as all other Primary Arms products.

This Primary Arms Microdot sight is our second-generation model that comes in at an affordable price while retaining excellent quality and durability. We have included a MIL-STD-1913 Picatinny rail mount with this red dot sight, so you can attach it to your rifle right out of the box in a matter of seconds and head to the range to get it sighted in. Alternatively, the mount is removable and features mounting options for other standard microdot riser mounts, so you can customize the height and co-witness with your iron sights. Adjusting the zero of the dot is made easy with the 1/2 MOA audible click adjustments that are protected by aluminum caps. Also included with this optic is a bikini lens cover to protect the glass when not in use. If you are in the market for a red dot sight for hunting, target shooting, or competition, you can’t go wrong with the Primary Arms Microdot.

  • Approx. 1,000-hour battery life at medium setting
  • Daylight Bright illumination
  • Uses one CR2032 battery (included)
  • Includes removable Picatinny rail mount.
  • Compatible with standard micro mounts and gives stated co-witness
  • Crisp 2 MOA red dot
  • Fully multi-coated anti-reflective lenses
  • 11 Illumination settings for bright days and night vision compatible
  • Absence of parallax shift past 33 yards
  • Waterproof to 6ft. with turret caps on
  • Water-resistant with turret caps off
  • Fog resistant
  • Bikini lens cover included

This micro red dot sight features 1,000 hours of battery life on a single CR2032 battery with 11 different illumination settings that can be quickly cycled through for use at night or on a bright day. This red dot sight is even compatible with night-vision equipment to further extend its range of uses. The 2 MOA red dot is extremely crisp and allows you to take quickly aimed shots at short range while still giving you the ability to make effective shots at medium ranges. The glass that the red dot is projected on is fully multi-coated to reduce reflection and provide a clear sight picture. The glass and electronic internals are covered by a durable, black hard coat anodized, 6061 aluminum housing with O-rings providing protection from water and fog. Because we are so confident in this microdot, we decided to offer it with a lifetime warranty. If you are serious about home defense or target shooting, this red dot sight will get the job done.

Built on the foundation that customer service is the most important product/service a company can offer, Primary Arms is dedicated to meeting the need of every customer with the utmost respect. Not only do we provide excellent customer service, but we also offer fast shipping and competitive prices on everything we sell. If our foundation is customer service, then our structure is the increasing line of high-quality, dependable optics designed right here in Texas. Our goal; to provide firearms enthusiasts, professional shooters, and servicemen, and women the right tools for the job at an affordable price.
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Battery Life1000 Hours
Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Brightness11 Settings
Click Value1 MOA
FinishHardcoat Anodized
Manufacturer.Primary Arms
Night Vision CompatibleNight Vision Compatible
Reticle2 MOA Dot
Reticle ColorRed
Weight4.2 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Excellent Cost Effective Alternative


Great product. It's an excellent alternative to the more expensive MD-ADS.

great product


Great product. Great customer service. Would/Will buy again. A+

Excellent service


Great service and feedback. Will definitely repeat my business here.

PA-Red Dot


Great sight !! Even though this baby didn't cost an arm and a leg, it's great !! Using it on my 22/45. I also have a green dot laser, as well as a silencer. It took 2 mins to dial in at 25 yards. 2" steel targets !! Oh yea I'm in Pa and it only took 3 days to get here !! Thumbs up for theses guys !!

Awesome Red Dot Great Price and Great Service


Great sight at a great price. As always Primary Arms was great. Very kind and polite. Even very nice and patient with tactifool who was just there to talk and not buy.

Great price!


Hard to beat for the money!

Affordable Red Dot


Haven't had a chance to really stress this piece out but easy use and very bright in all kinds of lighting environments. Well made and seems to be of good quality for the price point.

Decent for the price


I am happy with the optic but there is no way this is .5 moa per click. I'm guessing 1 moa or more at 100 yards. I go one click and I'm 1 moa left of center, adjust and 1 moa to the right of center. I cannot get center at 100 yards.

works great


I bought the Primary Arms micro dot. It is bigger than the Bushnell TRS; but the recticle seems to be sharper. The PA sight seems well built and sturdy. I'd recommend it.

Excellent red dot!


I bought this red dot based on reviews and Primary Arms' reputation. I haven't gone to the range with it yet but from taking it out of the box and setting it up it works great. I had almost no adjustments to zero it to my buis and the red dot is nice and sharp.