Primary Arms SLx Top Cap Reflex Mount, 30mm

• 12 O’clock reflex position: Places a compatible mini reflex sight directly above the scope, giving a fast transition from magnified aiming to close-range sighting without adding side offset.
• 30 mm top-cap fit: Built specifically for 30 mm SLx scope mounts, so it adds a piggyback red-dot option while keeping the mounting setup compact and centered over the rifle.
• Holosun 507C-style footprint: Supports the Primary Arms Classic Series 24mm Mini Reflex Sight and other optics that share the same footprint, making it easier to match the mount to widely used compact reflex sights.
• 6061 aluminum construction: Keeps weight low at 30.00 g while providing the rigidity needed for a mount that holds zero under regular field and range use.
• Low-profile fixed design: With 0 MOA inclination and 0° offset angle, the mount keeps the optic aligned in a straightforward, repeatable position for simple setup and consistent presentation.

About the Primary Arms Mounts Series

Primary Arms Mounts covers a broad accessory family built to support the company’s optics across different rifle setups. The series includes mounts for scopes, magnifiers, and red-dot optics, along with scope rings and risers, which places it as the practical hardware side of the Primary Arms lineup rather than a single-purpose product range. Within the catalog, users can choose from cantilever mounts, separate ring sets, and specialized mounting solutions that adapt optics to different shooting styles and rifle layouts.

A defining trait of the series is its emphasis on compatibility. The lineup includes options for 1-inch, 30 mm, and 34 mm optic tubes, while other models support interfaces such as M1913 Picatinny. Primary Arms also offers both cross-bolt and thumb-screw release configurations, allowing the mount family to cover everything from straightforward fixed installations to setups that prioritize quick handling. In practice, the series is aimed at shooters who want mounting solutions that match the role of their optic, whether that means a conventional scope mount, a flip-to-side magnifier mount, or a compact reflex-sight adapter that adds speed at short range.

About the Primary Arms SLx Top Cap Reflex Mount, 30mm

The Primary Arms SLx Top Cap Reflex Mount, 30mm is a compact accessory for shooters who want to add a miniature reflex sight above a magnified optic without moving to a side-mounted arrangement. Designed for use with 30 mm SLx scope mounts, it replaces the top cap with a mounting point that positions the reflex sight at the 12 o’clock position. That layout is especially useful on rifles set up for mixed distances, where the main scope handles medium-range work and the piggyback dot provides a faster sight picture for close targets.

This mount uses a Holosun 507C-style footprint, which also fits the Primary Arms Classic Series 24mm Mini Reflex Sight. That makes it a practical choice for compact open-emitter reflex optics commonly used as secondary sights. Because the optic stays centered over the bore instead of offset to one side, the presentation remains natural for shooters who prefer a simple head lift rather than a rifle cant. On 1.5” SLx 30 mm mounts, the base of the red dot sits at 2.04” height, helping create a clear separation between the magnified optic and the secondary sight.

The body is machined from 6061 aluminum and finished in black, keeping the mount light at 30.00 g while maintaining the stiffness needed for repeatable alignment. With 0 MOA inclination and 0° offset, the design stays purpose-built and uncomplicated: it adds a close-range aiming option without changing the scope’s primary mounting geometry.

About Primary Arms

Primary Arms Optics was founded in 2008 and is headquartered in Houston, Texas, United States. The company focuses on sporting and tactical optics, with a catalog that includes rifle scopes, prism scopes, red dot sights, mounts, and accessories. Its lineup is organized into product families such as PLx, GLx, SLx, and CLx, giving it a structured range that spans different performance levels and use cases.

Primary Arms is especially known for the ACSS reticle system, a proprietary reticle concept developed to combine aiming, ranging, and hold references in a more intuitive layout. The company also uses technologies such as AutoLive motion-sensing illumination in selected optics. Alongside product design and manufacturing, Primary Arms operates e-commerce, wholesale distribution, and government sales divisions, which reflects its strong presence across both civilian and professional shooting markets.

Main Features

• Manufacturer: Primary Arms
• Mount series: Primary Arms Mounts
• Made in: China
• 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
• Material: Aluminium
• Color: Black
• Weight: 30.00 g

Warranty

Primary Arms provides a 2-year warranty for this mount.