Primary Arms GLx 2X Prism Scope - ACSS CQB-M5 Reticle - 5.56 / .308/ 5.45 - AUTOLIVE™

Manufactured by Primary Arms
MPN: 710010
Manufactured by Primary Arms
46 Reviews

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After rigorous field testing, this optic has been given a Silver-tier rating by the National Tactical Officers Association.

Primary Arms Optics’ GLx 2x Prism has been awarded the ‘Best CQB Optic’ award for Ballistic’s Best 2020 Editors’ Selects Awards. These awards recognize outstanding performers in various product categories within the firearms community, including handguns, rifles, optics, and more. Ballistic’s Best Editors’ Selects Awards focus on products that go above and beyond the competition, winning out in key performance features for their selected category. For the CQB optics category, the GLx 2x Prism won the editors’ trust for its combination of form factor, innovation, and reliability.

This rifle scope is part of the mid-tier optics line called GLx. GLx brings premium technology and materials into an approachable price range.

The Primary Arms GLx 2X Prism Scope combines premium glass quality and the popular ACSS reticles in a ruggedized, compact form. This fixed power optic provides just enough magnification to enhance target identification, yet allows for seamless both-eyes-open, red dot style shooting at close-range targets. The compact body is just 5.3” long and weighs in at just 11.0 Oz with 3.5 inches of eye relief and a large 12mm exit pupil. This gives the 2X Prism Scope an incredibly forgiving eye box, well suited for fast engagements where a perfect eye position isn’t always feasible. Top it off with Daylight Bright illumination, a 20,000-hour battery life, and AUTOLIVE motion activation and the GLx 2X Prism Scope is sure to be a new favorite in your collection.

  • Glass etched reticle that works with illumination on or off
  • Daylight Bright full reticle illumination with 11 settings
  • CR2032 battery provides up to 20,000 hours of reticle illumination at medium settings
  • Forgiving eye box with 3.5” of eye relief, and a bright 12mm exit pupil
  • Patented ACSS CQB M5 5.56 reticle provides fast target acquisition, range estimation, and moving target leads out to 500 yards.
  • Quick adjust diopter ring for shooter-optimized reticle focus
  • 1/4 MOA click adjustments with capped turrets
  • Compact design at just 5.3” long and 11.0 ounces
  • Compatible with standard mini-ACOG style mounts
  • Includes 3 risers and ruggedized mount
  • Wide 42-foot field of view at 100 yards
  • Durable design for fog resistant, waterproof, and shock proof operation
  • Black hardcoat anodized finish
  • Protected by a lifetime warranty
This GLx 2x prism scope is more than just premium glass in a rugged body. This optic comes equipped with the next-generation ruggedized mounts. Despite being low weight, these mounts offer exceptional clamping power with hardened steel hardware, ensuring they will not move when properly torqued. The GLx 2X prism scope can also be mounted directly to popular mini ACOG-style mounts, either flush with the integrated belly mount or utilizing the included risers.

This GLx 2X Prism Scope features the patented ACSS® CQB-M5 5.56 reticle, combining bullet drop compensation, automatic ranging, and, moving target leads, and a fast acquisition horseshoe in one quick and intuitive package! For close range targets, the large outer horseshoe quickly grabs the eye and encourages quick target acquisition, while the center chevron allows for impressive precision at distance. The integrated BDC system offers holdovers for targets out to 500 yards and has been tuned for 5.56 NATO, 5.45x39mm, 6.8 SPC, 6.5 Grendel and some .308 Winchester loads. This BDC includes auto-ranging stadia, so users can determine target distance and engage with peerless accuracy!
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Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Click Value1/4 MOA
Eye Relief3.50 in
Field View 10042.00 ft
Focal PlanePrism Scope
Manufacturer.Primary Arms
Mount CompatibilityTrijicon Mini-ACOG
Night Vision CompatibleNight Vision Compatible
Optic SeriesGLx
ReticleACSS CQB-M5 5.56
Reticle ColorRed
Total Elevation Adjustment40 MOA
Total Windage Adjustment40 MOA
Turret FeaturesCapped Turrets, Tool Adjustable
TypeFixed Magnification
Weight11.0 Oz.
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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

46 reviews

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Happy that I’ve received mines.


🔥🔥Received mines and am already in love. I currently have 4 Primary Arms optics and love them all. 5 Stars

Hold up


GarandThumb puts out an awesome review on this and now we have to wait to buy this! (First world problems I know.)

Great substitute for ACOG.


Absolutely love this optic, easy to zero, glass clarity is out of this world. With it being 2x magnification I have no problem engaging targets at distance and targets at CQB. One day when cleaning my rifle, i dropped my upper with this optic on it on to concrete floor straight onto the optic (I’m very clumsy), after crying/dying on the inside. The only damage was the windage turret was dented and had what I guess is “stress cracks”, and small cracks on the mount. I checked zero and the optic was still zeroed where I left it. The optic itself was not affected by getting yeeted into the floor so far. Hopfully the cracks won’t get worse. I 100% want another one. This is a great optic for someone who can’t afford a ACOG or aimpoint.

Good initial impressions


I received this today, but have yet to shoot with it.

* The glass is quite clear and quite sharp. Lots of light getting in, too.
* The eye relief is nice. The specifications say 3.5", but I would say it's more in the 4-5" range.
* The reticle is very sharp and perfectly vertical.
* The last few illumination settings are daylight bright. The final setting, 11, is pretty darn bright. To be honest, I don't see myself turning the illumination on during the day though. You can see the etched reticle great without it.
* I'm really liking the 2x magnification. Really pulls distance shots in, but you can definitely still have both eyes open. My eyes adapted to it very quickly.

It comes with 3 different spacers so you can position the optic at different heights. I get pretty far down on my stock, so I actually wish there was an additional shorter option, but it's not a big deal. You can go without a spacer, but that's a little bit too short.

I Finally Found It....


Wow. This GLX 2X Prism is what I needed. I have tried red dots and LPVO'S and each has its place. But this optic is a true balance. Quality and affordability with a lifetime warranty. Im stoked. I just received it and paired it with my BCM Recce. The construction is just so solid everywhere. The turrets are tight and tactile...I like that. The glass is pristine and bright. And I think they sold it short on eye relief. Im getting more than 3.5" for sure AND the thing has a diopter for gosh sakes! No other product has this many features and value packed in this type of optic. Add to the package my ADM micro QD acog mount and it wont be losing zero. This optic is well beyond daylight bright at 11. Blinding. Im gonna run this thing at 6 and get my 20K hrs battery life with the added "shake awake" feature. And I havent even talked about the ACSS reticle. Those who have used it know. Those who havent must try it. PA killed it on this one. It was absolutely worth the wait.

Great optic!

by -

The optic is great. It's very crisp. Everything about this optic is impeccable except for how little/unforgiving the angle lets you see through it before it goes black. Not as forgiving as reviews made it sound. I hope my Dad likes it this Xmas!

This thing could be used as a hammer!


Being only 16 years old and not making much money I was taking a big gamble buying a near 400$ optic. Ever since I saw how well this performed on my AR10 CQB-Mid distance set up, primary arms has always been my number 1 store for gear.

Great 2x optic!

by -

Just what I was looking for on my SBR build. Have had it for 3 months or so and it's just perfect. Also has some super clean lines which look amazing!

Outstanding optic!


I am thoroughly impressed with this optic. Crystal clear glass, 2x power which, in my book, is perfect for an AK, and the excellent ACSS reticle. Finally, the AutoLive feature is a great addition to an already excellent optic.

Great Glass and reticle- not the best quality control on mount

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The scope is very clear, the reticle is fast to use, and is daylight bright unlike the PA ACCS FFP 1-6 scope I have that is not day light bright. It makes it easy to hit 8’ steel plates at 200 yards mounted on my 11.5’ 5.56 AR- and is also useable at close ranges.

Unfortunately, one of the two screws attaching the scope to the spacer/mount will not come out no matter how much force I use, so I am unable to put the scope on the quick release scope mount I got with it, or change the spacer heights.