Primary Arms SLx 1X MicroPrism™ Scope - Red Illuminated ACSS Cyclops Reticle - Gen II - Flat Dark Earth

Manufactured by Primary Arms
MPN: 710048
Manufactured by Primary Arms
18 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.


  • Compatible with this Unity Tactical FAST Mount
  • ACSS Cyclops Gen II reticle
  • About half the size of the Compact 1x Prism and over 20% lighter
  • 13 Illumination settings including Night Vision and true Daylight Bright
  • 3 Night Vision Settings: Low, Med & Flood
  • AutoLive motion-sensing on/off battery saving technology
  • 29,000 Hour battery life at medium setting
  • Includes 8 Mounting Height Options (incl. Absolute Cowitness & Lower 1/3 heights, see next page for details)
  • 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
  • Diopter for precision reticle clarity
  • 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
  • Fully Multi-Coated optics
  • IP76 Waterproof, nitrogen purged for fog resistance, and dust proof
  • Uses (1) CR2032 Battery (Included)
  • Lens Covers also included; ARD option sold separately
  • Flat Dark Earth finish
  • 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
ColorFlat Dark Earth
Field View 10076.50 ft
Focal PlanePrism Scope
IlluminatedPartial Illumination
ManufacturerPrimary Arms
Mount CompatibilityPrimary Arms MicroPrism, Trijicon Mini-ACOG
Optic SeriesSLx
Reticle ColorRed
Total Elevation Adjustment120 MOA
Total Windage Adjustment120 MOA
Turret Features
Weight5.5 oz.
  • Learn More About The Primary Arms SLx 1X MicroPrism
  • InRange Shows Off The 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

18 reviews


Perfect 1x for everything I have mounted it on.


It was zeroed right out of the box and is Beautiful inside and out. On my Remington 870, Ruger 10/22 and AR15.
Love all the primary arms Scopes I have bought.
Looking forward to cover options and anti reflective device.

Superior quality for an affordable price


This is a great company, look no further for your micro red dot. This is the one. This one is great and the FDE looks sick.

Excellent Option For Folks Who Wear Glasses


If your like me, a standard red dot is a no go as I wear glasses. Looking through this prismatic optic is like looking through a scope with great eye relief and zero magnification so I don't need to worry about if I have my glasses w/ me should something happen in the middle of the night. Just grab and go. Seems well built w/ super clear glass and auto on/off feature should make the battery last for a long time. Great price... Couldn't ask for much more.

Excellent Optic


Placed on my Maximum Defense MD-15 7.62 x 39. Perfect fit for this compact weapon. Replaced a red dot since my eyes need an prism scope, so glad I did. Amazing eye relief. Bought another one to go on my Galil. Great customer service, amazing fast shipping.


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I couldn’t be happier with this, finally got to the range today and I’m really impressed, I have it on an AR9, it is super easy to get on target with the horseshoe for quick shots, while the arrow point was surprising accurate, got it zeroed really quickly, was great for double taps, I’m impressed, the brightness levels are easily adjusted, the sun was setting towards the end of the range trip so I got to test it in both bright light and gradually fading light to right on the cusp of darkness and it preformed great throughout the spectrum of ambient light, I highly recommend it if your looking for something that’s compact, easy to get on target, with rapid shots bracketing the target but also accurate enough to take pretty precise shots at ranges common for pistol rounds, I will be adding a couple more of these on my future builds, 5 out of 5 stars!!!

We are happy that you are enjoying the new Primary Arms SLx 1X MicroPrism! Good shooting.

Just get it


I don't have a lot of experience with prism optics. Ive looked through acogs and the specter and so on but haven't used them or owned them. I've always come back to my trusty aimpoint compml2 and dealt with the flared dot as I was still happiest overall with it. I have not shot with the microprism yet but so far it is exceptional for the money and my vision through it is clearer than with the naked eye which, by itself, makes it a huge upgrade for me. Nevermind the clear reticle. The only slight complaint is that the brightness switch and eyepiece adjustments take a determined effort to move and the brightness switch feels a but mushy. It doesn't have the feeling of quality that the rest of the optic has. But with the auto on/off making it more a set and forget then it's not a huge issue.

I'd love to have one with just a plain circle/dot or the like as I think some of the utility of the chevron may be lost at 1x. But range time will tell. It may become my goto optic.

Great optic and reticle


Finish was nice. Tough build quality with good glass. ACSS reticle is easy to use. My eyes are getting worse with old age, and this really helps with astigmatism. Probably going to be my go to optic from here on out. Great price for features, battery life and quality. A+

Excellent optic

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I am very happy with this prism. It replaced my holosun 510c which i love. The glass is really good and clear. The reticle, i mean come, love the acss, i can do much finer aiming with this then my red dot as the dot covers the target or bullseye, especially 50yrds and out. It is very small, seems really tough, ive dropped it twice by accident, pretty hard right onto the optic, shot it after, dead on, and no cosmetic damage to the optic at all. When i seen how small it is in person, i was really worried that the sight picture would b tiny but it is not, the picture is large and fantastic. I cant say enough good things about this prism. It greatly enhances my capability on my ar pistol which is designed for cqb but i need to b able to reach out to 3 or 400 if i need to, and this allows me to do that with much greater precision. And it functions wether i have batteries or not. Great for tough times to come.

My favorite optic


This optic is truly amazing! Bought the first-gen Cyclops and loved it. I wasn't sure how they could improve upon it, but they did. Much bigger eyebox to look through truly phenomenal glass. It is a true daylight bright red illumination.

First Gen Cyclops


I have the first gen Cyclops! I can tell you it's a great optic. The reticle is nice and works for what I intended for it to do. Rides on top of my AR pistol and is very quick and easy to use! I can't wait to get the genII in and start using it! You can't go wrong here guys!