Osuma QD Base for 11mm

• Quick-detach design: The QD layout lets the base be removed and reattached quickly, which is useful when swapping optics or transporting a rifle while keeping the mounting process simple.
• 11 mm rail fit: Built for rifles with an 11 mm dovetail, this base gives a dedicated interface for classic rimfire and sporting platforms that do not use Picatinny rails.
• Steel construction: A steel body adds rigidity and wear resistance at the contact points, helping the base stand up to repeated installation and long-term field use.
• Low 9.50 mm height: The modest build height helps keep the optic closer to the bore, which supports a more natural cheek weld and a more consistent shooting position.
• 0 MOA alignment: With 0 MOA inclination, the base keeps the optic in a neutral mounting position that suits general hunting and everyday shooting setups.

About the Osuma Series

The Osuma mounting range is built around practical rifle use, with a strong focus on scope mounting solutions for hunters and shooters who need dependable attachment systems rather than unnecessary complexity. Within the lineup, Osuma offers bases, rings, rail mounts and quick-detach options for several common interfaces, including 11 mm, Tikka, Sako and Picatinny platforms. That makes the series especially relevant for users working with European sporting rifles, rimfires and combination guns where a dedicated fit matters.

Across the family, the design philosophy is straightforward: precise machining, secure engagement with the rifle’s rail, and dimensions that support a stable optic position. Osuma products are intended for real field handling, so the emphasis is on repeatable mounting, sensible height options and durable materials rather than oversized tactical styling. In practice, the series suits shooters who want a clean, mechanically simple mounting solution that matches the rifle correctly and keeps the sighting system solid through regular use.

About the Osuma QD Base for 11mm

The Osuma QD Base for 11mm is a dedicated mounting base for rifles that use an 11 mm dovetail, giving those platforms access to a quick-detach mounting solution without changing the rifle’s original interface. That makes it a practical choice for sporting rifles and rimfires where the owner may want to remove an optic for storage, transport or a change of setup while keeping the mounting system compact and purpose-built.

Its steel construction is important in a part like this because the base takes the load at the contact points between rifle and mount. A steel body helps resist wear from repeated attachment and removal, while also maintaining a solid feel under regular use. The 9.50 mm height keeps the setup relatively low, which helps preserve a natural head position behind the optic and reduces the overly tall sight line that can make a rifle feel less settled in the shoulder.

The 0 MOA inclination keeps the optic level in a neutral configuration, which is well suited to general hunting and everyday target shooting distances. Finished in matte, the base also keeps the appearance understated and appropriate for a working rifle. Overall, this Osuma mount base is aimed at shooters who need a simple, durable and correctly proportioned interface for an 11 mm rail, with the added convenience of quick-detach handling.

About Osuma

Osuma’s history dates to the early 1990s, when its owner developed the first scope mounts for his own hunting and benchrest shooting needs. From that starting point, the company grew into a Finland-based brand focused primarily on rifle scope mounting, and its products are designed and manufactured in Finland. The business has also passed from father to son, which reflects the continuity behind the brand and its product development.

Osuma’s range now covers scope mounts, scope rings, rail mounts, red-dot and holosight mounts, and suppressors, with mounting solutions for systems such as 11 mm, Tikka 17 mm, Sako, Picatinny, Optilock and Blaser. That specialization in mounting hardware is what makes the brand particularly relevant in this category: Osuma concentrates on the mechanical fit, stability and usability that matter in everyday hunting and shooting setups.

Main Features

• Manufacturer: Osuma
• Made in: Finland
• Production since: 2022
• Material: Steel
• Color: Matte
• Height: 9.50 mm
• Inclination: 0 MOA

Warranty

This Osuma mount base is supplied with a 10-year warranty, giving long-term coverage that suits a durable steel mounting component intended for regular field use.