Osuma Pair of Rings for Osuma Base, 30 mm

• 30 mm ring size: Built for 30 mm riflescope tubes, these rings provide a correct, secure interface that helps maintain alignment and consistent clamping pressure.
• Fixed Osuma base interface: Designed to attach to an Osuma base as part of a fixed mounting system, giving a straightforward setup with repeatable positioning.
• Ø 7 mm compatibility: The lower interface matches Osuma, EAW, Optilock and Recknagel Ø 7 mm systems, which makes these upper parts practical for compatible base arrangements.
• Made in Finland: Finnish design and manufacture reflect a focus on precise fit and dependable function for hunting and shooting use.
• Black finish: The understated black surface suits a wide range of rifles and optics while keeping the mount visually discreet.

About the Osuma Osuma Base Rings Series

Osuma Osuma Base Rings are part of the brand’s fixed scope-mount system, developed for shooters who want a modular way to build a riflescope mounting setup around a dedicated base. In this series, the rings are intended to attach to Osuma bases, forming one section of a three-part assembly that combines the base, the lower ring section and the upper ring section into a complete mount. That approach gives the series a practical role within hunting optics and general riflescope installation, especially where a clean, fixed arrangement is preferred.

The series covers several common tube diameters, including 1 inch, 30 mm, 34 mm, 36 mm and 40 mm, and it is offered in low, medium and high height variants depending on size. Osuma positions these rings as durable, purpose-built components rather than universal adapters, with compatibility tied to the company’s own base system and related interfaces. The rings are described as being made from high-grade aluminum with an anodized surface, which supports low weight, corrosion resistance and a tidy finish suitable for regular field use.

About the Osuma Pair of Rings for Osuma Base, 30 mm

The Osuma Pair of Rings for Osuma Base, 30 mm is a dedicated upper ring set for shooters using a fixed Osuma mounting arrangement with a 30 mm riflescope tube. Its role is simple but important: it provides the clamping section that secures the scope to the rest of the mount while preserving proper tube fit. For hunting rifles and general sporting setups, correct ring diameter matters because it helps avoid uneven pressure on the scope body and supports stable optic positioning over time.

This model is configured for the Osuma Base system and uses a Ø 7 mm interface compatible with Osuma, EAW, Optilock and Recknagel patterns listed for this product. That makes it a practical choice when building or replacing the upper part of a compatible mount without changing the entire system. The KR 0.0 mm extension indicates a neutral, non-extended layout, which suits straightforward scope placement where extra forward or rearward offset is not required.

Its black finish keeps the appearance discreet on both traditional hunting rifles and more modern scoped setups. Because these rings are made for a specific base family rather than as a generic clamp-on solution, they are best suited to users who value a precise, system-matched fit. In use, that means simpler integration with the intended base platform and a mounting solution that stays focused on secure support rather than unnecessary complexity.

About Osuma

Osuma is a Finland-based brand whose history goes back to the early 1990s, when its owner developed the first scope mounts for his own hunting and benchrest shooting needs. The company has since remained focused on riflescope mounting, and the business later passed from father to son. That background is reflected in a product range built around practical shooting requirements rather than broad general accessories.

Osuma designs and manufactures its products in Finland and offers scope mounts, scope rings, rail mounts, red-dot and holosight mounts, suppressors and shooting accessories. Its mounting range covers several common rifle interfaces, while its scope rings are described as aluminum components with an anodized surface. With a catalogue of more than 150 products, Osuma has built a reputation around specialized mounting solutions for hunters and target shooters who need system-specific fit and straightforward mechanical design.

Main Features

• Manufacturer: Osuma
• Series: Osuma Osuma Base Rings
• Made in: Finland
• Warranty: 2 years
• Extension (KR): KR 0.0 mm
• Scope / sight type: 30 mm
• Color: Black
• Compatibility above: 30 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 provides a 2-year warranty for this product. This stated warranty period gives clear coverage in years without relying on open-ended warranty terminology.