Primary Arms Micro Review

Primary Arms Micro Review


I recently took the plunge and added a Primary Arms Micro Prism to my AR-platform rifle, and it’s been a game-changer. Let’s break down this optic, exploring its strengths, weaknesses, and how it’s performed in the field.

First Impressions: Big Features, Small Package

Right off the bat, I was impressed by the Micro Prism’s design. It’s remarkably compact and lightweight, adding minimal bulk to my rifle. This is a huge advantage compared to bulkier prism optics, making it ideal for maintaining a balanced feel. Construction feels solid, and the included mount offered a variety of height options for a perfect co-witness with my iron sights.

A Sight Picture Unlike Any Other

The real star of the show is the Micro Prism’s unique sight picture. Unlike a red dot sight, it uses an etched reticle with a small, illuminated center dot. This allows for a clear view of your target, even in low-light conditions, without sacrificing the aiming precision of the red dot. The etched reticle itself, in my case the ACSS Cyclops Gen 2, offered ballistic drop compensation and ranging features that proved surprisingly useful when dialing in my AR.

Out at the Range: Putting the Micro Prism to the Test

The first range trip with the Micro Prism was an eye-opener. The sight picture was incredibly clear, and target acquisition at close to medium range was lightning fast. The etched reticle provided a crisp aiming point, and the illuminated dot offered just the right amount of brightness without washing out the target. The 3x magnification (in my case) was perfect for precise shot placement, allowing me to confidently engage targets beyond what would be effective with iron sights alone.

Not Without Its Quirks

While I’m thoroughly impressed with the Micro Prism’s overall performance, there are a few things to consider. First, the etched reticle does have a slight learning curve compared to a simple red dot. It took some practice to get used to using the aiming point within the reticle for precise targeting. Second, the illumination controls are located on the left side of the sight, which felt a little awkward to reach at first. I imagine this wouldn’t be an issue for left-handed shooters, but it took some getting used to as a righty.

What Others Are Saying

Online reviews for the Primary Arms Micro Prism are overwhelmingly positive. Users praise its compact size, clear sight picture, and the versatility offered by the etched reticle. Some reviewers, like myself, mentioned a slight learning curve with the reticle, but most agreed it was a minor hurdle to overcome for the overall benefits. A few comments mentioned a preference for right-side illumination controls, mirroring my own experience.

Alternatives and Applications

If you’re looking for a super simple red dot sight, the Micro Prism might be a bit overkill. However, for anyone wanting the benefits of a red dot with the added precision of magnification and ballistic information, the Micro Prism is a fantastic option. It excels on AR-platform rifles, offering a perfect blend of close-quarters speed and mid-range accuracy. While I haven’t tried it myself, some users report success with the Micro Prism on shotguns and PCCs (pistol caliber carbines).

The Final Verdict

The Primary Arms Micro Prism has become my go-to optic for my AR. Its compact design, clear sight picture, and versatile reticle have made me a believer. While there’s a slight learning curve with the reticle and the illumination controls might be awkward for some, these are minor quibbles compared to the overall benefits. If you’re looking for a red dot sight that punches above its weight, the Primary Arms Micro Prism is definitely worth considering.