#mount

The Scalarworks LEAP/04 RMR mount has earned a strong reputation among shooters who want an extremely lightweight, durable, and precisely engineered mounting solution for Trijicon RMR-pattern red dot optics. Designed primarily for Picatinny rail systems, the mount combines advanced manufacturing techniques with a minimalist design philosophy that emphasizes strength, repeatability, and ease of use. Rather than relying on large external levers or bulky hardware, Scalarworks engineered the LEAP/04 to maintain a compact profile while still offering quick-detach capability and excellent return-to-zero performance.

One of the most notable aspects of the LEAP/04 is its construction. The mount is CNC-machined from a single billet of 7075-T6 aluminum, a material widely used in aerospace and military applications because of its exceptional strength-to-weight ratio. Compared to the more common 6061-T6 aluminum found in many optic mounts, 7075-T6 offers significantly greater tensile strength and resistance to deformation under stress. Critical components within the mounting system also utilize 4140H steel, adding additional durability in high-wear areas. The mount is protected by a Type III hard-coat anodized finish, while steel parts receive a nitride treatment for corrosion resistance and long-term reliability.

In terms of dimensions, the LEAP/04 has been offered in several height configurations to accommodate different shooting preferences and firearm setups. The traditional absolute co-witness model provides a centerline height of approximately 1.42 inches above the rail, while the lower one-third co-witness version sits at approximately 1.57 inches. Scalarworks also offers a taller 1.93-inch option for shooters seeking a more upright head position or compatibility with specialized equipment. The mount measures roughly 2.08 to 2.13 inches in length and approximately 1.34 inches in width, depending on the specific model. Weight remains impressively low, ranging from about 1.5 to 1.7 ounces, making it one of the lightest quick-detach RMR mounts available.

Versatility is another major strength of the LEAP/04. The mount is compatible with standard MIL-STD-1913 Picatinny rails and supports a broad range of optics using the Trijicon RMR footprint. This includes various Trijicon RMR models, the SRO series, RMR HD, RCR, and several Holosun optics such as the 407C, 507C, and 508T families. This broad compatibility allows shooters to move between optics without replacing the mount itself. Different height options also make the mount suitable for AR-platform rifles, pistol-caliber carbines, and other firearms where sight height can significantly affect shooting comfort and performance.

Durability is a defining characteristic of the LEAP/04. Scalarworks designed the mount around its proprietary ClickDrive quick-detach system, which uses a low-profile thumbwheel and telescoping clamp arrangement. Unlike some quick-detach systems that depend heavily on friction or oversized levers, ClickDrive uses a spring-loaded ball detent mechanism that helps maintain consistent clamping pressure while resisting recoil-induced loosening. The company reports extensive engineering analysis and testing during development, including force testing and finite element analysis, to optimize strength while minimizing unnecessary material. The result is a mount that is both lightweight and exceptionally rigid.

Another practical advantage is the mount’s streamlined shape. The absence of large levers or protruding hardware reduces the likelihood of snagging on slings, gear, or clothing. The low-profile design extends less than 7 millimeters from either side of the rail, helping maintain a clean and compact weapon setup. Shooters who frequently transport rifles or operate in confined environments often appreciate this feature because it reduces bulk without sacrificing functionality.

From a value standpoint, the Scalarworks LEAP/04 sits in the premium end of the optics mount market. Its retail price is generally higher than many competing RMR mounts, but buyers are paying for premium materials, American manufacturing, extremely low weight, advanced engineering, and a robust quick-detach system. For users who prioritize minimizing weight while maintaining reliability and repeatable zero retention, the mount offers substantial long-term value. Its lifetime warranty further enhances its appeal by providing confidence that the product is intended to withstand years of hard use.

The Scalarworks Leap/04 RMR mount can be located at Brownells:

Frostreaver Sabre-Tooth Cat Mount

This big housecat looks extra toothy and mean. It’s certain to scare monsters and players alike! Available on the Marketplace.

I am usually not much into mounts (they don't work with characters that wear illusions!!) but this is a fluffy lil kitty!

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