Primary Arms GLx Absolute Cowitness Micro Dot Riser Mount w/ .125" Spacer (1.41" or 1.535" Height)

Manufactured by Primary Arms
MPN: 910088
Manufactured by Primary Arms
4 Reviews

In Stock

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The GLx mounts redefine what can be accomplished when the latest technology is applied to meet the shooting challenges faced in real world situations. Designed right here in America with the perfect balance between strength, durability, and weight, GLx mounts will impress even the harshest critics.

The GLx Riser Mount has arrived! Precision machined from lightweight 6061-T6 aluminum, this GLx mount has been optimized for use on the AR platform. The cantilevered design pushes your microdot forward slightly to provide that extra space should you wish to use a magnifier as a force multiplier behind your red dot sight. With a pair of solid steel cross bolts that both clamp to the top rail and function as recoil lugs, as well as integral recoil lug machined into the base, even the heaviest recoil is no match. An included .125” spacer even allows you to choose the optimal height for your red dot! Backed by a lifetime warranty, the GLx Riser Mount is the perfect fit for your favorite optics with industry standard mount interfaces.

  • Compatible with industry standard footprint used by the SLx Microdot sights
  • 1.41” Central height without spacer, 1.535” with included spacer
  • 100% designed in the U.S.A.
  • Lightweight and durable 6061-T6 aluminum construction
  • MIL-SPEC hard coat anodized finish
  • Zinc Phosphate coated hardware for corrosion resistance
  • High strength steel cross bolt lugs
  • Over 3,800lbs of clamp force when torqued to suggested rating of 55-65 in-lbs.
  • Weighs just 2.0 Oz
  • Backed by a lifetime warranty

Built on the foundation that customer service is the most important product/service a company can offer, Primary Arms is dedicated to meeting the need of every customer with the utmost respect. Not only do they provide excellent customer service, they offer fast shipping and competitive prices on everything they sell. If the foundation is customer service, then the structure is the increasing line of high quality, dependable optics designed right here in Texas. The goal; to provide firearms enthusiasts, professional shooters, and servicemen and women the right tools for the job at an affordable price.
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Accessory AttachmentM1913 Picatinny
BrandPrimary Arms
FinishHardcoat Anodized
Mount CompatibilityAimpoint Micro
Mount HeightAbsolute - 1.41 or 1.535
Optic SeriesGLx
Optic TypeAimpoint T2
PlatformM1913 Picatinny
Quick ReleaseCross Bolt
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

4 reviews

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Good Quality

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Fit and finish great, its all square. Looks to be like other Primary Arms mounts that are made by Warne? It fits great, absolute cowitness without spacer using a holosun 503(not the c). Looks great, fits great, if I don't desire a qd option I will remember this one for sure.

Great Mount


Great budget riser mount for something like a sig romeo 5 or some of the holosuns, feels sturdy and looks really good.

Solid Mount


This is a solid riser mount. The two cross bolts are by far the biggest I've seen that comes with scopes or mounts. I mated it to the Primary Arms SLx MD-20 micro dot and it looks great and clamps to the pic rail rock solid. The nice thing about this riser is it comes with a spacer so you can set up for absolute cowitness (without spacer) or 1/3 cowitness (with spacer). I don't know why more manufacturers don't do this, especially for the risers that come with the red dot scopes. If you got a red dot that comes with high mount lower 1/3 and want to set up for absolute, you have to buy another riser. Vortex Sparc AR is the only one I've seen so far that gives you that option from the factory. Overall, very happy with this mount and I think I will pick up more for future builds. And the price is also great.

Good Mount, Watch Torque

by -

This is a solid riser mount which does provide for an absolute co-witness as advertised. I did run into a problem when installing but PA resolved quickly. For those considering this mount, be advised the torque on the cross bolts might not be correct at the stated 65 in/lbs. The threaded insert head snapped off way before I got to 65, I changed torque wrenches and snapped the second one @ 42 in/lbs. As stated, PA replaced without issue so my recommendation is to take it to about 30-32 in/lbs. which is plenty for a good connection/attachment. Your mileage may vary.
I did experiment and the mount less the insert heads and could/would torque to 33 in/lbs. It would return to zero only if a torque wrench was applied each time the dot was mounted. Just be aware, I was unable to return to zero no matter how careful I tried without the torque wrench.
Overall, pleased with the product and it's limitations as stated.... even so I do recommend the mount and always recommend PA for your needs!