Primary Arms 30mm SLx Cantilever Mount, 20 MOA

• 20 MOA inclination: Built-in forward cant preserves more upward adjustment in the riflescope, which is useful when setting up a rifle for longer-distance shooting.
• Cantilever layout: The forward extension helps position a 30 mm scope correctly on AR-pattern rifles and other platforms with limited receiver rail space, improving eye relief without extra adapters.
• 30 mm compatibility: The mount is sized for 30 mm scope tubes, making it a practical match for many LPVO and mid-power tactical optics.
• Aluminium construction: The aluminium body keeps weight to 165.00 g, helping maintain a lighter rifle balance while still providing a rigid base for the optic.
• 1.5 in-class mounting height: With a 38.00 mm height, the mount places the optic at a height commonly suited to modern sporting rifles, supporting a natural head position behind the scope.

About the Primary Arms Mounts Series

Primary Arms Mounts covers a broad range of optic-mounting solutions for shooters who need practical, platform-specific hardware rather than one-size-fits-all designs. The series includes mounts for scopes, magnifiers, and red-dot optics, along with scope rings and risers, so the lineup supports everything from compact carbines to magnified hunting optics and tactical optics.

Within the range, M1913 Picatinny compatibility is a recurring theme, reflecting the series’ focus on common rifle interfaces and straightforward installation. The catalog also spans cantilever mounts, separate rings, and risers, with versions for 1-inch, 30mm, and 34mm optic tubes. That variety matters in practice because it lets shooters match mount height, tube size, and eye-relief position to the rifle and optic combination instead of compromising on fit.

Primary Arms also separates its mount family into CLx, SLx, GLx, and PLx variants, mirroring the brand’s broader product structure. In use, that gives the series a clear progression from accessible everyday mounts to more specialized options, while keeping the emphasis on secure optic alignment, sensible geometry, and compatibility with common modern rifle setups.

About the Primary Arms 30mm SLx Cantilever Mount, 20 MOA

The Primary Arms 30mm SLx Cantilever Mount, 20 MOA is built for shooters who need a simple, solid way to mount a 30 mm riflescope while also preparing the rifle for more elevation travel at distance. Its defining feature is the 20 MOA inclination, which angles the optic slightly downward relative to the bore. In practical terms, that helps preserve internal elevation adjustment in the scope, making the mount especially relevant for rifles set up for longer-range work.

The cantilever design is equally important. By pushing the optic forward, it helps achieve proper eye relief on rifles with limited top-rail space, particularly AR-platform rifles and similar tactical setups. That means the shooter can keep a comfortable head position without moving the scope too far back or resorting to awkward mounting solutions. Combined with its 30 mm ring size, the mount suits a wide range of LPVOs and general-purpose riflescopes used for target shooting, field use, and practical rifle applications.

Its aluminium construction keeps overall weight to 165.00 g, which helps avoid adding unnecessary mass high on the rifle. The 38.00 mm height and 23.00 mm BH height place the optic at a level that works well with many modern rifle stocks and shooting positions, supporting a more natural sight picture. With no built-in bubble level and a fixed, purpose-driven layout, this mount stays focused on the essentials: correct scope placement, reduced weight, and a geometry that supports consistent shooting with a 20 MOA long-range bias.

About Primary Arms

Primary Arms Optics was founded in 2008 and is headquartered in Houston, Texas, United States. The company designs and manufactures optics while also operating e-commerce, wholesale distribution, and government sales divisions. Its product range covers rifle scopes, prism scopes, red dot sights, mounts, and accessories, giving it a broad presence across sporting, defensive, and professional shooting categories.

A key part of the brand’s identity is the structured product family of PLx, GLx, SLx, and CLx lines, which helps separate products by intended role and feature level. Primary Arms is also closely associated with the ACSS reticle system, one of its notable optics technologies, and with features such as AutoLive motion-sensing illumination technology in applicable sighting products. In the mount category, that optics-focused background is relevant because the company designs mounting solutions to work alongside the scope and sight formats it already produces.

Main Features

• Manufacturer: Primary Arms
• Mount series: Primary Arms Mounts
• Made in: China
• Scope / Sight type: 30 mm
• Tube diameter: 30
• Inclination: 20 MOA
• Extension (KR): 0 MOA
• Offset angle: 0°
• BH height: 23.00 mm
• H height: 38.00 mm
• Material: Aluminium
• Bubble level: No
• Weight: 165.00 g

Warranty

Primary Arms provides a 2-year warranty for this mount. That period suits a straightforward mechanical accessory and gives defined coverage in years rather than an open-ended warranty description.