Osuma 17 mm Dovetail Base, Mauser M12

• 17 mm dovetail fit: Built for rifles that use a 17 mm-style dovetail interface, this base provides a direct mounting platform without adding unnecessary bulk or complexity.
• 0 MOA inclination: The flat profile keeps the optic aligned without built-in cant, making it a practical choice for general hunting setups and normal-distance zeroing.
• Aluminium construction: The lightweight aluminium body adds a stable mounting point while keeping overall rifle weight under control for field carry.
• Model-specific compatibility: Designed for rifles such as the Mauser M12 (pre-2019) and related actions, it helps achieve a cleaner, more secure fit than a generic base.
• Made in Finland: Finnish design and manufacture reflect Osuma’s focus on precise scope-mounting components for hunting and shooting use.

About the Osuma Rail Mounts Series

Osuma Rail Mounts are built around one clear purpose: adapting rail-equipped optics to common rifle mounting standards in a practical, mechanically simple way. The series covers mounts for optics with integrated Zeiss ZM/VM and Swarovski SR rails, giving shooters an alternative to traditional ring-based mounting when using compatible scopes. Within the range, Osuma offers versions for several rifle interfaces, including 11 mm, Tikka 17 mm, Sako, Picatinny and Optilock patterns.

Designed and manufactured in Finland, the series reflects Osuma’s long-standing emphasis on precise mounting solutions for hunting and shooting rifles. The concept is straightforward: provide a secure connection between optic and rifle while matching the geometry of the host platform as closely as possible. Depending on the model, the range supports everything from conventional sporting rifles to more specialized configurations, including an AR-oriented Picatinny variant in the ZM-rail line. For shooters using premium rail-mounted optics, the Osuma Rail Mounts family offers a focused, platform-specific approach that prioritizes fit, repeatable alignment and uncomplicated installation.

About the Osuma 17 mm Dovetail Base, Mauser M12

The Osuma 17 mm Dovetail Base, Mauser M12 is a dedicated mounting base for rifles that use this specific dovetail pattern, including the Mauser M12 (pre-2019), Mauser M98 Standard, Mauser 98 Action (Without Bulb) and Musgrave K98. Its main advantage is not complexity but fit: a base made for the rifle and interface in question gives the optic a more stable starting point and avoids the compromises that often come with universal mounting parts.

The base is made from aluminium, which keeps weight low while still providing the rigidity needed in a riflescope mounting system. That matters on a hunting rifle, where unnecessary mass high on the action can affect balance and handling. The black finish gives the base a subdued appearance that matches most modern rifles and optics without drawing attention to the mounting hardware.

With 0 MOA inclination, this Osuma base is intended for straightforward optic installation rather than long-range cant compensation. For most hunting and general shooting applications, that makes setup simpler and keeps the scope in a neutral position for conventional zeroing distances. As part of Osuma’s mounting range, it suits shooters who want a clean, rifle-specific solution for attaching an optic to a 17 mm-style dovetail platform while preserving practical handling and dependable alignment.

About Osuma

Osuma is a Finland-based brand whose history goes back to the early 1990s, when its owner began developing scope mounts for his own hunting and benchrest shooting needs. The company remains focused on one core area of expertise: rifle scope mounting. Its range includes scope mounts, scope rings, rail mounts, red-dot and holosight mounts, suppressors and accessories such as the Trigger Widener.

Osuma designs and manufactures its products in Finland, and its scope rings are made from aluminium with an anodized surface for durability. The brand’s portfolio now covers more than 150 products, with mounting solutions for systems such as 11 mm, Tikka 17 mm, Sako, Picatinny, Optilock and Blaser. The company has also remained a family business, having passed from father to son, which fits its practical, specialist approach to hunting and shooting equipment.

Main Features

• Manufacturer: Osuma
• Series: Osuma Rail Mounts
• Made in: Finland
• Material: Aluminium
• Color: Black
• Inclination: 0 MOA
• Rifle compatibility: Mauser M12 (pre-2019), Mauser M98 Standard, Mauser 98 Action (Without Bulb), Musgrave K98
• Upper interface compatibility: 16.5 mm Dovetail Without Holes, 16.5 mm Dovetail with Tikka T3 notches and holes, 16.5 mm Dovetail With Holes, 16.5 mm Dovetail with Tikka T3-like recoil notches without holes

Warranty

2 years. Osuma states a two-year warranty period for this product line, matching the warranty information provided for this base.