Osuma Single Ring for Osuma Base, 34 mm

• 34 mm Scope Fit: Built for riflescopes with a 34 mm main tube, this ring provides the correct clamping surface for larger-tube optics often used in long-range and hunting setups.
• Osuma Base Compatibility: Designed for the Osuma Base system and compatible with EAW Ø 7 mm, Optilock Ø 7 mm, Osuma Ø 7 mm and Recknagel Ø 7 mm interfaces, it gives broad flexibility when configuring a fixed scope mount.
• Aluminium Construction: The aluminium body keeps weight down while still providing the rigidity needed for a stable optic mounting point on a hunting rifle or precision setup.
• Anodized Black Finish: The black anodized surface helps resist wear from handling and installation while matching the finish of most riflescopes and mounting components.
• Made in Finland: Designed and manufactured in Finland, this ring reflects Osuma’s focus on precise scope-mount components for practical field and range use.

About the Osuma Osuma Base Rings Series

Osuma Osuma Base Rings are part of the brand’s fixed-mount system built around separate bases and ring components. The series is intended for shooters who want a straightforward, solid way to mount a riflescope while keeping the flexibility to match the ring size to the optic and the base to the rifle. In practice, that makes the series relevant for both hunting optics and more deliberate target or benchrest rifle setups.

The design follows a modular three-part concept consisting of a base, a bottom ring and a top ring. Across the series, Osuma offers versions for several common base types, including 11 mm and 17 mm rails, Sako rails, Picatinny rails and Tikka M55/M65 rifles. Ring sizes cover the main scope tube standards from 1 inch to 40 mm, and selected sizes are offered in different heights to help achieve proper objective clearance and a practical sight line. The rings are made from high-grade aluminium with an anodized surface, reflecting a design approach that values low weight, clean fit and dependable day-to-day durability.

About the Osuma Single Ring for Osuma Base, 34 mm

The Osuma Single Ring for Osuma Base, 34 mm is a dedicated upper ring component for building or replacing part of an Osuma fixed scope-mount setup. Its role is simple but important: it provides the correct clamping interface for a 34 mm riflescope tube, a common format on optics intended for larger adjustment ranges, stronger internal mechanics or larger optical systems. For the shooter, that means this ring suits modern hunting and precision scopes that need a stable, correctly sized mounting point.

Because it is made for the Osuma Base system, this ring is best understood as part of a modular mounting solution rather than a standalone universal ring. It works with Ø 7 mm interface bases used by EAW, Optilock, Osuma and Recknagel patterns, giving useful compatibility when matching existing rifle hardware or replacing worn upper parts. The aluminium construction keeps the assembly lighter than steel alternatives, which helps preserve the handling balance of the rifle, while still offering the stiffness needed to hold scope alignment securely. Its black finish gives a subdued appearance and adds surface protection against regular use. With 0.0 mm KR extension, this version is a neutral, non-extended ring choice for conventional scope positioning where no additional offset is required.

About Osuma

Osuma is a Finland-based manufacturer focused primarily on rifle scope mounting. The brand’s history goes back to the early 1990s, when its owner began developing scope mounts to meet his own hunting and benchrest shooting needs. That practical origin still shows in a product range centered on mounting solutions for real rifle use rather than general accessories alone.

Today, Osuma produces scope mounts, scope rings, rail mounts, red-dot and holosight mounts, suppressors and other shooting accessories. Its catalogue includes more than 150 products, and the company remains known especially for mount systems made from aluminum with an anodized surface. Osuma products are designed and manufactured in Finland, and the business has passed from father to son, reinforcing its specialist identity in the field of sporting and shooting optics mounting.

Main Features

• Manufacturer: Osuma
• Series: Osuma Osuma Base Rings
• Made in: Finland
• Material: Aluminium
• Extension (KR): KR 0.0 mm
• Scope / Sight Type: 34 mm
• Color: Black
• Compatibility Above: 34 mm
• Compatibility Below: EAW Ø 7 mm Interface
• Compatibility Below: Optilock Ø 7 mm Interface
• Compatibility Below: Osuma Ø 7 mm Interface
• Compatibility Below: Recknagel Ø 7 mm Interface

Warranty

Osuma states a 2-year warranty for this product line. This gives defined coverage in years for a critical mounting component that supports the scope-to-rifle connection.