Primary Arms Micro Red Dot MD-RBGII Review


Primary Arms Micro Red Dot MD-RBGII is a dependable, sturdy, great quality sight in an affordable price range. While it doesn’t contain all the features of some of the expensive sights, the features are everything most users will need. Your needs are going to depend on the answer to a few questions.

Prior to the purchase of a sight, you need to consider the purpose of your sight. One of the most important things to consider is at what distances you will be shooting at targets. Also, what is the weapons intended use? Answering those questions will help you decide if the Primary Arms sight is the right choice.

Battery Life

The battery life of your red dot sight matters because you want to make sure the reticle will be there when you need it. With a short battery life, there is the possibility the light could go out in the middle of lining up the target. The Primary Arms Micro Sight offers 1,000 hours of battery life, which is a great battery life for a sight.


You also want to make sure the sight is waterproof if you live in a moist area. The micro sight is waterproof, although that doesn’t mean you should dunk it in water. Waterproof means that you can be outside in the rain and snow. If you hunt throughout the winter months or target practice in the rain, waterproofing is a needed feature.

Minute of Angle

Most rifle users understand the importance of the minute of angle, or MOA. It will measure the size of the dot at 100 yards, and lets you group your shots together. The Primary Arms sight is 2 MOA, meaning 2 inches at 100 yards. While a 2 MOA is good, it will decrease your decision at longer distances.

One of the nice features of the sight is there are 12 different brightness adjustments, so you can adjust it from night vision up to extremely bright daylight. The front lens is coated and angled to help reduce any glare from the sun. All of these things will help increase your accuracy.

Ability to Mount on Multiple Firearms

The ideal sight can be mounted to multiple rifles. The removable base allows you to use any mount made for micro red dot sights. Because of its size, you could use the sight to be mounted to co-witness.

Customer Rating and Reviews

The Primary Arms Micro Red Dot Sight receives a 4.5 out of 5 star rating on Amazon. 72% of the customers give the sight a 5 star rating, which is fabulous! Some of the great features they list and love are:

Features and Specifications

  • The multiple brightness adjustments available, including night vision.
  • Perfect for co-witnessing
  • Crisp and Clear 2 MOA
  • Perfect for AR-15, but used on a variety of firearms.
  • Awesome price for great features and quality
  • Rugged and durable.

There you have it! It is easy to understand why so many love this red dot sight. For under $100, it is easy to understand why you would be skeptical. However, the quality is still great. You can add mount it with multiple accessories for a customized rifle. For the price, you can’t beat this sight!

Back to Our 2016 List of the 10 Best Red Dot Sights Under $100


About BethanyH89

Hi guys! I am a mother of 3 young children, married to my wonderful husband. We are gun enthusiasts and avid hunters. We advocate teaching children safe gun practices.
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