Primary Arms PLx Top-Cap Reflex Mount, 30mm

• 12 o’clock reflex position: Mounts a compatible mini reflex sight directly above the scope, giving a fast transition from magnified aiming to close-range target engagement without changing the rifle’s overall balance.
• 30 mm top-cap fit: Built for 30 mm PLx scope mounts, so it integrates cleanly with the host mount and keeps the auxiliary sight centered over the bore for a straightforward sight picture.
• Trijicon RMR-pattern interface: The Trijicon RMR mounting standard broadens optic compatibility, making it practical for users who want to add a compact reflex sight without changing their main scope setup.
• Aluminium construction: The aluminium body keeps weight under control while providing the rigidity needed for a secure optic platform that holds alignment during regular field or range use.
• 0 MOA, no-offset layout: With 0 MOA inclination and a 0° offset angle, the mount keeps the reflex sight in a neutral, centered position that favors quick, intuitive presentation.

About the Primary Arms Mounts Series

Primary Arms Mounts covers a broad range of optic-mounting solutions for shooters who want to configure rifles around specific sighting needs rather than rely on a one-size-fits-all setup. The series includes mounts for scopes, magnifiers, and red-dot optics, along with scope rings and risers, which places it as a practical support line alongside the company’s optics families. Within the catalog are options for 1-inch, 30 mm, and 34 mm optic tubes, as well as designs intended for compact reflex sights and MicroPrism-style optics.

The design philosophy of the series is modular and application-driven. Some models use cross-bolt attachment, while others use thumb-screw release configurations, allowing the lineup to serve everything from straightforward range rifles to more specialized tactical or hunting optics setups. The family also includes cantilever mounts, separate rings, risers, and flip-to-side magnifier mounts, showing that the series is built around flexibility in optic height, eye relief, and accessory placement. In practice, that makes Primary Arms Mounts a useful series for shooters who want to combine magnified optics with secondary aiming solutions in a clean, purpose-built way.

About the Primary Arms PLx Top-Cap Reflex Mount, 30mm

The Primary Arms PLx Top-Cap Reflex Mount, 30mm is a specialized accessory for shooters who want to add a compact reflex sight above a magnified optic without moving to a side-offset arrangement. Its 30 mm format is intended for compatible PLx scope-mount setups, and the top-cap design places the secondary sight at the 12 o’clock position. In practical use, that means the rifle can stay upright while the shooter shifts from the main scope to a reflex sight for close targets, awkward shooting positions, or rapid follow-up work at shorter distances.

The mount uses the Trijicon RMR footprint, which is a widely adopted interface for compact reflex sights. That makes it a sensible choice for a rifle that needs a lightweight backup aiming system or a fast supplementary sight for mixed-distance shooting. Because the mount sits directly over the scope rather than offset to one side, the sight picture remains centered over the rifle, which many users prefer for transitions that feel more natural and for use from either shoulder.

Its aluminium construction supports a strong, stable mounting platform while keeping the assembly compact. The 37.00 mm BH height and 52.00 mm H height define the optic’s position above the host mount, while the 0 MOA inclination and 0° offset angle keep the setup neutral and straightforward. Finished in black and made in the USA, this mount is aimed at shooters building a refined magnified-optic-and-reflex combination for practical field or range use.

About Primary Arms

Primary Arms Optics was founded in 2008 and is headquartered in Houston, Texas. The company designs and manufactures optics while also operating e-commerce, wholesale distribution, and government sales divisions, giving it a broad role in the shooting-equipment market. Its optics range includes rifle scopes, prism scopes, red dot sights, mounts, and accessories, which makes the brand especially relevant to users building complete sighting systems rather than buying a single standalone optic.

Within its optics lineup, Primary Arms organizes products into the PLx, GLx, SLx, and CLx families, each aimed at different performance tiers and use cases. The company is also known for the ACSS reticle system, one of its defining optics technologies, and for features such as AutoLive motion-sensing illumination in compatible sights. That combination of optics design and mounting accessories helps explain why Primary Arms has become a familiar name in both practical sporting and tactical-style rifle setups.

Main Features

• Manufacturer: Primary Arms
• Mount series: Primary Arms Mounts
• Made in: USA
• Scope / Sight type: 30 mm
• Tube diameter: 30
• Mounting standard: Trijicon RMR
• BH height: 37.00 mm
• H height: 52.00 mm
• Extension (KR): KR 0.0 mm
• Inclination: 0 MOA
• Offset angle: 0°
• Bubble level: No
• Color: Black
• Material: Aluminium

Warranty

2 years. This mount is covered by a 2-year warranty.