Primary Arms SLx 1X MicroPrism™ Scope - Green Illuminated ACSS Gemini 9mm Reticle

Manufactured by Primary Arms
MPN: 710052
Manufactured by Primary Arms
8 Reviews

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This Primary Arms MicroPrism is part of the SLx optics line. SLx optics built their reputation for innovation, reliability, and value. All SLx optics undergo rigorous field-testing during development to best serve you in any environment.

The SLx® 1x MicroPrism is an all-new advanced optical system designed from the ground up in an ultra-compact housing, allowing use of backup iron sights and magnifiers. The 1x MicroPrism is part of the SLx optics line. SLx optics built the reputation for innovation, reliability, and value. All SLx optics undergo rigorous field-testing during development to best serve you in any environment. In this case, they put the optic through over 7,000 rounds of .308 through a SCAR 17s.

  • ACSS Gemini 9mm reticle
  • About half the size of the Compact 1x Prism and over 20% lighter
  • 13 Illumination settings + NightVision - Highest settings are Daylight Bright
  • 3 NightVision Settings:  Low, Med & Flood 
  • AutoLive motion-sensing on/off battery saving technology 
  • Approx. 45,000 Hour battery life at medium setting
  • Includes 8 Mounting Height Options (incl. Absolute Co-witness & Lower 1/3 heights)
  • Length: 2.48”  
  • Weight: 7.6 oz with height riser (only 5.5 oz without riser)
  • Etched Reticle, perfect answer for astigmatism and works without illumination
  • Usable Eye Relief Range:  2” to 6” with 3.6” for optimum Field of View
  • Wide Field of View (76.5 ft @ 100 yds), excellent for CQB situations
  • 120 MOA W/E Adjustments; 1 MOA Click Value
  • Fully Multi-Coated optics
  • IP67 Waterproof, nitrogen purged for fog resistance, and dust proof
  • Uses (1) CR2032 Battery (Included)
  • Lens Covers included; ARD option sold separately
  • Backed by Primary Arms Lifetime Warranty

Using cutting-edge LED technology, the SLx 1x MicroPrism offers 13 illumination settings with AutoLive® motion-sensing on/off technology and three night vision settings. At maximum illumination, the MicroPrism offers true Daylight Bright performance, while the innovative low-power sleep mode safeguards battery life for reliable ‘always-on’ storage. Though small in size, virtually no sacrifice was made for eye relief and even offers a generous field of view.

This package also includes the new ruggedized mounting system with industry standard mini-prism footprint, guaranteeing reliability and zero retention through heavy use and adverse conditions. Out of the box, this mount offers 8 different mounting heights and configurations, ensuring compatibility with any rifle system.
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Battery Life25,001 - 50,000 Hours
Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Click Value1 MOA
Field View 10076.50 ft
Focal PlanePrism Scope
IlluminatedPartial Illumination
Manufacturer.Primary Arms
Optic SeriesSLx
Reticle ColorGreen
Total Elevation Adjustment120 MOA
Total Windage Adjustment120 MOA
Turret Features
Weight5.5 oz.
  • Primary Arms 1x MP Optic - Perfect 9mm Optic?
  • Best Optic For Your 9mm PCC SLX1 ACSS Gemini 9mm Reticle
  • learn More About The Primary Arms SLx 1X MicroPrism
  • 1x Micro Prism by Primary Arms | Tactical Rifleman
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

8 reviews

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Great Optic, reticle on the small side


Have the cyclops 2 version of this and love it. Bought this to put on my Ruger PCC however the Gemini reticle is smaller than the Cyclops 2. Its small enough to fit inside the cyclops 2 reticle with some room to spare. Returning this and will likely get a a second cyclops 2 version. Still 5 stars as I consider my issue to be one of personal preference. Still a great optic, very good eye relief, clear glass, durable, compact, will work with a dead battery. Crisp reticle even with astigmatism.



I have to thank Eltanya and David, and P/A's CSR team. because FedEx lost my package and after a couple of emails back and forth I had my optic in hand the next day (nice job, thanks) I mounted it to my new Aero precision EPC-9 pistol build. I have really bad astigmatism and this thing is nice and clear to my eyes and I simply Love it! the reticle with one big outer ring and a simple chevron is awesome. and the ranging marks are a bonus but on a 9mm AR pistol probably not needed but better to have and not need than to need and not have as they say. and another bonus, finally something with extended battery life with motion-sensing on and off. also, all the different height options are such a nice feature to have and I went with the highest mount, it just felt perfect to me. I wish I could post a picture but oh well I guess. thanks again P/A for another great product and awesome customer service!

Good optic

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I got this for me and the red version for my dad for Christmas. The controls are very stiff and when I try to change the brightness I end up unscrewing the battery cap. The ocular adjustment is also tight which made getting adjusted hard but I don't think this is a negative since you don't want it to be loose so it will hold once its where you want it. The reticle is on the small side for my eye but I'm going to put more rounds through it.

VERY small reticle

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Initial impressions upon recieving today:
-Build quality seems way ahead of its price point!
-brightness dial is VERY stiff
-highest brightness is great, even against snowy background
-BUT, the reticle is too small. I have 20/20 corrected vision, and can just barely discern between the chevron and the dot below it. I will be taking it out in a few days for real world testing, but this might have to go back. For a 9mm/short distance shooter, I would like a much bigger reticle. I don't need tiny dots for long distance work.
It might be returned depending on real world use. More to come.

9mm sub gun heaven-


Because this optic is so new, it was hard to get a good feel for what to expect. It’s the perfect size for sub 9mm. The reticle is sharp as a razor blade and even more impressive when its illuminated. The reports that it is small are correct. The reticle is a miracle in its self. Even though I can’t imagine shooting 200+ yards with 9mm, the tools are there to get it done. Fantastic eye relief and ridiculously clear glass. 9mm Magic.

damn cool


This optic is solid, especially with all the included mounting options, I have put it on a ruger pc-charger 9mm with the 6.5 inch barrel (takedown model). I zeroed at 25yds, and was ringing steel out to 150 easily. I had never tried shooting 9mm past 75 yds in the past. It was a blast seeing how effective this optic can make a pistol. I found the BDC to be pretty accurate, but it all depends on the particular load you are shooting also. I was running two different loads when testing and found that one of them was off using the BDC. I would recommend this reticle, when they come back in stock grab one regardless if you are ready to install it on your build/assembly. You will use it eventually, and if you wait they will be out of stock when you are ready, so just do it.

Couldn't ask for a better PCC optic.


This thing pairs wonderfully with the kp-9. My astigmatism sent me in the direction of prism sights. The reticle is completely crystal clear. I loved this one so much I bought the 3x micro-prism with 7.62 reticle. When you consider the price, quality and aesthetics then this is hands down one of the best options out there imo.

What a machine

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Just put this 1X Prism Sight on my buddy's 9mm Foxtrot Mike Upper (16" barrel). What a machine. Faster than any dot sight made and plenty of precision to any distance one would likely fire a 9mm carbine.