C-More STS Rail Mount - 3/8'' Rail

• 3/8'' rail fit: This mount is made for firearms with a 3/8'' rail, giving STS-pattern C-More micro red dots a direct and tidy installation on many rimfire rifles and similar platforms.
• C-More RTS/STS interface: The mount uses the C-More RTS/STS mounting standard, so it provides the correct footprint for compatible miniature red dot sights without improvised adapter solutions.
• Aluminium construction: The aluminium body keeps weight down while still providing the rigidity needed to hold the sight securely during regular field use and repeated handling.
• Low-profile fixed design: As a fixed mount, it keeps the optic close to the bore line, which helps preserve a natural sight picture and a compact overall setup.
• Broad rimfire compatibility: The 3/8'' rail format suits a wide range of rifles such as the CZ 457, Ruger American Rimfire, and Sako Quad, making it a practical choice for target shooting and small-game setups.

About the C-More MRD Mounts Series

C-More MRD Mounts are built around the company’s miniature red dot sight platform and are intended to give STS2-style micro sights a secure fit across very different firearms and mounting surfaces. Within the range, C-More offers solutions for 3/8-inch rails, Weaver and Picatinny rails, scope tubes, and model-specific handgun and rimfire applications. That broad approach places the series as a practical support line for shooters who want to move the same sighting system between platforms without changing optic families.

The series is defined by its focus on compact micro red dot integration. Some mounts are made for STS, STS2, or RTS2 compatibility, while others are tailored to specific optic-ready cuts or firearm models, so the range covers both general-purpose and dedicated installations. In use, that means the series serves competition shooters, rimfire users, and owners of compact carbines or pistols who want a mounting option matched to the host firearm rather than a one-size-fits-all adapter. The overall design philosophy is straightforward: keep the sight interface consistent, keep the mount compact, and provide application-specific geometry where it matters.

About the C-More STS Rail Mount - 3/8'' Rail

The C-More STS Rail Mount - 3/8'' Rail is a dedicated fixed mount for fitting compatible C-More STS-pattern micro red dot sights to firearms that use a 3/8'' rail. That makes it especially relevant for rimfire rifles and training platforms where this rail format is common. Instead of relying on a bulkier cross-platform adapter, this mount is purpose-built for the rail type, which helps keep the installation simple and the optic positioned neatly on the firearm.

The main advantage of this model is its combination of direct-fit geometry and lightweight aluminium construction. A mount in this category needs to do two things well: hold the sight securely and avoid adding unnecessary bulk to a compact optic system. The aluminium body supports that goal by keeping the setup light, which matters on small-calibre rifles used for long practice sessions, field carry, or fast positional shooting. The fixed format also keeps the optic close to the receiver, helping maintain a natural head position and a clean presentation when using a miniature red dot.

Because it uses the C-More RTS/STS mounting standard, this mount is suited to shooters already invested in the C-More ecosystem and looking for a firearm-specific mounting solution rather than a universal compromise. On compatible rifles such as the CZ 457, Ruger American Rimfire, or Sako Quad, it provides a straightforward way to add a compact red dot for fast target acquisition, informal competition, or small-game use.

About C-more

C-MORE Systems has offered sights since 1993 and is based in Warrenton, Virginia, United States. The company is known for its focus on aiming optics, particularly red dot sights and rifle scopes. Its red dot lineup includes the RTS2, STS2, RTS3, CRC, Railway, Slide Ride, and Serendipity families, covering everything from compact miniature reflex sights to competition-oriented designs.

That specialization is important in products like this mount, because C-MORE also makes the supporting hardware needed to install its optics correctly. Alongside its sight lines, the company offers dedicated mounting solutions for different firearms and interfaces, as well as products such as the C3 1-6x24 rifle scope. The result is a product range centered on practical sighting systems and the accessories required to adapt them to real shooting applications.

Main Features

• Manufacturer: C-more
• Mount series: C-More MRD Mounts
• Mounting Standard: C-More RTS/STS
• Material: Aluminium
• Application: 3/8'' Rail
• Compatibility: Accuracy International AW, Anschutz 54.30, Anschutz 1727 F, Anschutz 1827 F, CZ 452 (11 mm), CZ 452 (3/8"), CZ 453 (11 mm), CZ 511, CZ 512, CZ 513, CZ 455, CZ 457, Erma Werke M1, Krico 400, Marlin 917, Marlin 982, Marlin 983, Marlin XT-17, Marlin XT-22, Mauser 86SR, Mossberg Plinkster, Ruger American Rimfire, Ruger Model 96 series, Sako Quad, Savage Model 389

Warranty

1 year. C-more states a 1-year warranty for this mount in the product information.