
Primary Arms GLx Lower 1/3 Cowitness Micro Dot Riser Mount w/ .125" Spacer (1.64" or 1.765" Height) - 910089
$39.99
$49.99
Primary Arms GLx Riser Mount: Elevating Your AR-Platform Optics Performance
The world of tactical shooting and precision optics demands gear that not only performs but excels under real-world conditions. For discerning shooters utilizing the popular AR platform, optimizing the setup of their red dot or microdot sight is paramount for achieving rapid target acquisition, comfortable sight picture, and overall improved accuracy. This often leads to questions like, "What's the best way to get the right height for my red dot sight on an AR-15?" or "How can I mount my microdot to allow space for a magnifier?" The answer lies in expertly engineered mounting solutions, and the Primary Arms GLx Riser Mount emerges as a definitive choice, redefining what shooters can expect from their optic accessories.
Designed and developed entirely in America, the GLx Riser Mount is a testament to cutting-edge technology meeting practical shooting challenges. It strikes an impeccable balance between robust strength, enduring durability, and minimal weight – critical factors for any firearm accessory. Whether you're a competitive shooter striving for split-second advantages, a hunter needing reliable performance in varied environments, or a professional requiring unwavering dependability, this mount is meticulously crafted to impress even the most rigorous critics.
Optimized Design for the AR Platform: A Closer Look
At its core, the GLx Riser Mount is precision machined from lightweight, yet incredibly strong, 6061-T6 aluminum. This specific aerospace-grade aluminum alloy is chosen for its superior strength-to-weight ratio and excellent resistance to corrosion, ensuring that the mount can withstand the rigors of heavy use without adding unnecessary bulk to your rifle. The meticulous machining processes result in a mount that fits perfectly, provides a stable platform, and looks as professional as it performs.
One of the standout features of this mount, specifically optimized for the AR platform, is its innovative cantilevered design. Users frequently encounter the challenge of limited rail space when attempting to pair a red dot sight with a magnifier. A traditional mount might place the red dot too far back, eating into the precious space needed for a magnifier to achieve proper eye relief. The GLx Riser Mount's cantilever extends the microdot forward slightly, creating that crucial extra space behind your red dot sight. This foresight in design allows for seamless integration of a force multiplier, such as a Primary Arms SLx 3x MicroPrism Magnifier, ensuring you can transition effortlessly between close-quarters precision and extended-range observation without compromise. This answers the common user query, "How do I make room for a magnifier behind my red dot on an AR-15?"
Unwavering Stability and Recoil Resistance
A common concern with any optic mount is its ability to maintain zero under sustained recoil. The GLx Riser Mount addresses this head-on with a multi-pronged approach to stability. It features a pair of solid steel cross bolts that serve a dual purpose: they not only securely clamp the mount to your rifle's top Picatinny rail but also function as robust recoil lugs. These steel components are engineered to absorb and dissipate the kinetic energy generated by each shot, preventing any unwanted movement or shift in your optic's position.
Adding another layer of security, an integral recoil lug is precision machined directly into the base of the mount itself. This redundancy in recoil management means that even the heaviest and most consistent recoil from your AR-platform rifle will be no match for the GLx Riser Mount's steadfast grip. This level of engineering directly contributes to the mount's ability to hold zero, ensuring that your shots land where you intend them to, time after time. When users ask, "What's the most durable red dot mount that can handle heavy recoil?", the GLx Riser Mount provides a compelling answer.
Customizable Optic Height for Optimal Performance
Achieving the correct optic height is fundamental for a comfortable shooting position, rapid sight acquisition, and a consistent cheek weld. Different shooters have different preferences, and various rifle setups or body types can influence the ideal height. Recognizing this, Primary Arms has included a clever solution with the GLx Riser Mount: a .125” (1/8 inch) spacer.
Out of the box, the mount provides a central height of 1.64 inches, which is often ideal for many shooters seeking a lower 1/3 co-witness with standard AR iron sights. However, if you require a slightly higher mount for an even more comfortable head position, improved situational awareness, or specific shooting styles, simply integrate the included spacer. This elevates the central height to 1.765 inches, providing a subtle yet significant adjustment. This thoughtful inclusion allows you to fine-tune your optic setup to achieve your personal optimal height, answering the vital question: "How do I choose the optimal red dot height for my AR-15?"
This flexibility is crucial for shooters who may experiment with different stock setups, body armor, or personal shooting stances. The ability to customize your sight height easily and effectively with a simple, included component adds immense value and adaptability to the GLx Riser Mount.
Core Features of the GLx Riser Mount
The GLx Riser Mount is packed with features that underscore its premium quality and functional superiority. Each element is carefully considered to enhance the user experience and ensure long-term reliability.
- Broad Compatibility: Engineered to be compatible with the industry-standard footprint used by Primary Arms' own popular SLx Microdot sights, ensuring a wide range of red dot optics can be seamlessly mounted. This includes many other microdot sights on the market sharing this common interface.
- Adjustable Central Height: Offers two distinct central heights – 1.64 inches without the included spacer, and 1.765 inches with the spacer. This allows users to select the optimal height for their specific needs, whether aiming for a co-witness with iron sights or simply a more comfortable head position.
- American Design Excellence: Proudly 100% designed in the U.S.A., reflecting a commitment to domestic engineering and rigorous quality control standards. This ensures that every mount meets the high expectations of American shooters.
- Premium Material Construction: Crafted from lightweight yet incredibly durable 6061-T6 aluminum, the mount offers exceptional structural integrity without unnecessary weight. This material choice contributes to the mount's longevity and resistance to deformation.
- MIL-SPEC Hard Coat Anodized Finish: The mount features a MIL-SPEC hard coat anodized finish. This process creates an extremely hard, abrasion-resistant surface that protects the aluminum from scratches, scuffs, and corrosion, even in harsh environmental conditions. This finish also provides a non-reflective, tactical appearance.
- Corrosion-Resistant Hardware: All hardware, including screws and bolts, is Zinc Phosphate coated for superior corrosion resistance. This treatment ensures that critical components remain free from rust and degradation, maintaining the mount's integrity and functionality over years of use, even when exposed to moisture or extreme temperatures.
- High Strength Steel Cross Bolt Lugs: The use of high-strength steel for the cross bolt lugs ensures maximum clamping force and resistance to shearing forces from recoil. These robust lugs are a cornerstone of the mount's ability to maintain zero.
- Exceptional Clamping Force: When torqued to the suggested rating of 55-65 in-lbs., the GLx Riser Mount boasts an impressive clamping force of over 3,800 lbs. This immense force ensures that the mount remains immovably secured to your Picatinny rail, eliminating any concerns about optic shift during dynamic shooting scenarios. This data point is a significant indicator of the mount's superior engineering and reliability.
- Ultra-Lightweight Profile: Weighing in at just 2.0 ounces, this mount adds minimal weight to your firearm setup, preserving the rifle's balance and maneuverability. This is a crucial consideration for shooters who prioritize keeping their overall rifle weight down for extended periods of carry or rapid transitions.
- Backed by a Lifetime Warranty: Primary Arms stands firmly behind the quality and durability of the GLx Riser Mount with a comprehensive lifetime warranty. This commitment provides exceptional peace of mind, assuring customers that their investment is protected against manufacturing defects and material failures for the lifetime of the product. This warranty underscores the brand's confidence in its products and its dedication to customer satisfaction.
Primary Arms: A Foundation of Customer Service and Quality
The philosophy driving Primary Arms goes beyond just manufacturing exceptional products; it’s built on the unwavering belief that outstanding customer service is the most important product or service a company can offer. This dedication translates into a commitment to meeting the needs of every customer with the utmost respect and efficiency.
Beyond the customer-centric approach, Primary Arms is renowned for its swift shipping and competitive pricing across its extensive range of products. This commitment ensures that customers receive their gear promptly and at a fair value, further enhancing the overall purchasing experience.
At the heart of Primary Arms’ structure is an ever-expanding line of high-quality, dependable optics and accessories, all meticulously designed in Texas. The company’s overarching goal is to equip firearms enthusiasts, professional shooters, and servicemen and women with the precise tools they need for the job, all while maintaining an affordable price point. The GLx Riser Mount is a prime example of this mission, offering premium features and performance that are accessible to a wide array of users.
For those seeking to enhance their AR-platform's optical performance with a dependable, American-designed, and rigorously tested solution, the Primary Arms GLx Riser Mount provides an undeniable advantage. This product, like many other high-quality firearms accessories, is available at leading retailers like DEGuns.
Technical Specifications & Details
| Feature | Detail |
|---|---|
| UPC | 818500015536 |
| Material | 6061-T6 Aluminum |
| Finish | MIL-SPEC Hard Coat Anodized |
| Hardware | Zinc Phosphate Coated Steel |
| Un-Spaced Height (Center) | 1.64 inches |
| Spaced Height (Center) | 1.765 inches |
| Weight | 2.0 ounces |
| Clamp Force (Max) | Over 3,800 lbs (at 55-65 in-lbs torque) |
| Recoil Management | Steel Cross Bolts, Integral Base Lug |
| Compatibility | Industry Standard Microdot Footprint |
| Design | Cantilevered for Magnifier Clearance |
| Origin | Designed 100% in U.S.A. |
| Warranty | Primary Arms Lifetime Warranty |
| SKU | 910089 |
Specifications
Explore the specific details and characteristics
- Manufacturer
- Primary Arms
- SKU
- 910089
- UPC
- 818500015536
- MPN
- 910089







