Osuma 30 mm Special Scope Mount for 25.4 mm

• Cross-Eye Adaptation: This special scope mount is built for shooters who need to move the optic to the opposite side, helping them continue shooting with their usual shoulder position after changing aiming eye.
• 30 mm to 25.4 mm Interface: It accepts a 30 mm scope while attaching to an existing 25.4 mm (1 inch) mount setup, making it a practical solution when changing the optic or adapting an established rifle configuration.
• 0 MOA Alignment: The 0 MOA inclination keeps the optic in a neutral mounting position, which suits general hunting and sporting use where no built-in cant is required.
• Aluminium Construction: The aluminium body keeps weight down while still providing the rigidity needed for secure scope positioning and repeatable alignment in field use.
• Made in Finland: Designed and manufactured in Finland, this mount reflects Osuma’s long focus on practical rifle scope mounting solutions for hunters and shooters.

About the Osuma Special Scope Mounts Series

Osuma Special Scope Mounts are a purpose-built series for shooters who need more than a conventional ring or rail solution. The line was developed for situations where the aiming eye must change, such as after an accident, while the shooter still wants to keep the rifle on the same shoulder. In practice, that makes the series especially relevant to hunters and sporting shooters looking for a way to stay with a familiar rifle setup rather than relearning their entire shooting position.

The defining idea behind the series is the ability to shift the sight to the opposite side. Osuma describes these mounts as attaching to existing scope mounts, creating a practical bridge between the rifle’s current mounting arrangement and the optic that needs to be repositioned. The series includes versions for 25.4 mm and 30 mm scope tubes, with aluminium construction used on these variants to keep the mount manageable in weight while maintaining the stiffness needed for secure optic support. This is a specialist mounting family, but one designed around a very clear field problem: helping a right-handed or left-handed shooter continue using a preferred rifle effectively after an aiming-eye change.

About the Osuma 30 mm Special Scope Mount for 25.4 mm

The Osuma 30 mm Special Scope Mount for 25.4 mm is a highly specific fixed mount made for shooters who need to offset a scope rather than simply clamp it in a standard centered position. Its main role is to let a 30 mm scope work with an existing 25.4 mm (1 inch) mounting arrangement, which is particularly useful when adapting a rifle for a change in aiming eye. Instead of replacing the entire shooting system, this mount helps preserve a familiar stock weld, trigger reach and shoulder position.

The 0 MOA inclination keeps the optic level in a neutral configuration, which suits ordinary hunting and range distances without introducing additional cant. Because there is no windage adjustment built into the mount, the design stays simple and solid, relying on the rifle and optic’s normal zeroing process rather than adding extra moving parts. That simplicity is often an advantage on a specialist mount, where secure positioning matters more than added adjustment features.

Its aluminium construction supports practical field use by reducing unnecessary bulk while still providing the rigidity expected from a fixed scope mount. The black finish gives it a discreet appearance that fits naturally with most rifles and optics. For shooters dealing with an aiming-eye transition, this Osuma mount is less about adding features and more about solving a real fit problem in a clean, durable and mechanically straightforward way.

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. That origin still defines the company’s focus: practical mounting solutions shaped by real rifle use rather than by broad accessory trends. Osuma remains a family business, having passed from father to son, and its products are designed and manufactured in Finland.

The company’s main area of expertise is 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. Across the line, Osuma is known for offering mounting solutions for a wide variety of interfaces, including 11 mm, Tikka 17 mm, Sako, Picatinny, Optilock and Blaser systems. For products like this one, that specialization matters because it shows a long-standing focus on fit, alignment and practical compatibility in hunting optics and shooting equipment.

Main Features

• Manufacturer: Osuma
• Series: Osuma Special Scope Mounts
• Made in: Finland
• Mount type: Fixed mount
• Scope / sight fit: 30 mm
• Base compatibility: 25.4 mm (1 inch)
• Extension (KR): KR 0.0 mm
• Inclination: 0 MOA
• Windage adjustable: No
• Material: Aluminium
• Color: Black

Warranty

Osuma provides a 2-year warranty for this mount. The stated warranty period matches the product’s general specification and suits a fixed aluminium mounting solution intended for regular hunting and shooting use.