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

Great Micro Dot


I purchase red dots from Primary Arms in the past, and I like these red dots alot, I put them on my first Ruger Mark lll pistol and I can drive a nails at 15 to 20 yards. I decided to put this on a Browning Buck Mark 7.25 UDX, haven't shot it yet. Can't wait to try it, But the pistol looks great too.Shipping is always fast. Ordered it on Tuesday and had it by Saturday to Hawaii. I have never had a problem with Primary Arms Products and I will do business with them again.

PA Micro Dot-American Defense Mount


I purchased this Micro Dot/ Mount set to use on my 15-22. Initial install to the mount was a breeze. The QD American Defense absolute co-witness mount needed a slight adjustment for the lockup to hold tight, but once it was adjusted it was perfect. It took a few minutes to zero at 25 yards but once it was zeroed it was spot on for the 2 bricks (1050 rounds)that were shot out of it, even after removing a couple times to shoot with the backup sights. The glass has a slight Blue\Greenish tint when looking though but its not too bad at all. I forgot about it once i got to the range and started shooting. I have absolutely no doubts that this will hold up on well on my 15-22, I am even getting another for my M&P 15. Don't hesitate on purchasing this optic. It went out of stock a few times before i finally got to order mine but PA keeps getting new inventory of these every few weeks. Great Red Dot!!!

Good Clear Dot


I put this red dot on my 9mm pistol build. It performed as expected. As the name of the product states it is a "Micro" version and does not take up much room on the rail. I am not running a BUIS on this build, so I cannot comment on co-witness. The provided mount looks good and seems solid. I would recommend it for anyone looking for a small red dot, given the quality and that a 1/3 co-witness mount is provided this is an excellent value for those looking for a quality red dot for their setup.

Good quality red dot!


I ran a Primary Arms red dot for a couple years competing in multigun matches and thought I needed to upgrade to another brand because everyone knows you can't compete with a sub $100 optic (liars!). Well I have tried 2 other high priced brands and both have been sent back! I'm sticking with Primary Arms. This dot has great daylight visibility and the mount is rock solid!

I love this optic!


I received my optic very quickly unfortunately the base that I ordered wouldn't mount without some play making it impossible to hold zero. One call and two days later, I had a new sight and mount at my door completely free of charge. The new optic and mount mated perfectly and zeroed in two shots. The crisp 2 moa dot and clear glass are a remarkable combo for the price. I would recommend it to anyone.

primary arms is the best!


I received the first micro dot & was having problems with it holding zero. after making sure it wasn't my mounting system wasn't the cause then sending primary arms an email. primary arms promptly sent a replacement with no other questions asked. I'm glad to say the new one is holding zero & i love the site. great company to do business with. sells a good product backed by great customer service. highly recommended & will continue buying from.



I recently bought and mounted a sight/scope rail (UltiMAK) for my M1 Carbine (AO), then shopped for a mid-market red-dot sight. After a lot of reading reviews (of products and their vendors), watching videos, and comparing features, I settled on the PA MD-RBGii. Received it 5 days after ordering. Prepped the base & clamp screws with the provided thread locker and mounted the sight w/o any difficulty (sight approximately centered on the rail). Took the carbine to an indoor range a few days later expecting to have to spend at least an hour and a couple of boxes of ammo to zero the sight. At 50 yards, firing while hand-holding the weapon with elbows resting on the stand (no bags), 4 of the first 10 rounds were in the black, with the remainder in the white off to the left, but all dead-on in elevation. After small adjustments for windage and 20 more rounds, all rounds were within ~ 3†centered on the X. I was very pleased.

2 MOA micro dot


I wanted a red dot less than 3 MOA to get a little more accurate, but didn't want to pay $500. The primary arms MD-RBGll was exactly what I was looking for and it is a smaller dot than the Bushnell TR-25 at a similar price point. Primary Arms doesn't disappoint. Get one, you'll love it.

Great product!


I was really iffy at first as I have had bad luck with cheaper red dots but I have to say I am very surprised with the quality of this thing not only was shipping fast but the optic itself is crisp and bright ,the brightness dial stays put with no play, holds zero even under rapid fire. I purchased this for my ar-15 and plan on purchasing another one for my ak build.

let down


I was so excited for this product because of all the great things I've heard, but when I got it and turned it on it had a double dot. There was a dimmer dot right above the actual one. I read the instructions about this and it isn't my eye because it rotates when I rotate the optic. I got the package yesterday (Friday) and since it doesn't work, I'll have to see if I can get it replaced.