Rusan Front Ring for Pivot Mount, 40mm

• 40 mm ring interface: Built for optics with a 40 mm mounting diameter, giving a correct mechanical fit for large-tube scopes used on specialized hunting and shooting setups.
• Upper front ring part: This component serves as the front upper ring in a Rusan pivot mount, making it useful for replacing a worn part or completing a mount without changing the entire assembly.
• Steel construction: The steel body provides the rigidity needed to keep the optic held securely under recoil and repeated opening and closing of a pivot-style mount.
• Pivot-mount compatibility: Designed for the Rusan pivot system, it supports the quick-detach character of swivel mounts while preserving the precise ring geometry needed for repeatable optic positioning.
• Black finish: The black surface keeps the part visually discreet on the rifle and helps it match the rest of the mount for a uniform, practical setup.

About the Rusan Spare Parts Series

Rusan Spare Parts is the manufacturer’s range of replacement and component-level mount parts for users who want to maintain, repair, or configure existing Rusan mounting systems without replacing a complete assembly. Within the company’s scope-mount and ring parts offering, these components are grouped under other mount parts and include individual ring elements intended for specific mounting tasks.

A defining characteristic of the series is that the parts are sold individually as one piece, which is useful when only one section of a mount needs to be replaced. The range covers several common ring diameters, including 26, 30, 34, 35, 36, and 40 mm, so it supports both conventional riflescope tubes and larger-diameter optics. Depending on the ring type, the series also includes different height and attachment variants, allowing the user to match the part to an existing mount geometry rather than adapting the rifle or optic around a generic replacement. In practice, the series is aimed at shooters and gunsmiths who value a precise fit, continuity with the original mount, and the ability to keep a proven setup in service.

About the Rusan Front Ring for Pivot Mount, 40mm

The Rusan Front Ring for Pivot Mount, 40mm is a dedicated front upper ring part for the Rusan pivot-mount system, intended for optics that use a 40 mm mounting diameter. Rather than functioning as a universal ring, it is made to integrate with a specific mounting architecture, which matters when maintaining the alignment and repeatability expected from a pivot-style setup. For users replacing a damaged ring half or assembling a mount from individual components, that model-specific approach is more practical than substituting a generic part.

The use of steel is especially relevant here. On a pivot mount, the ring must do more than simply clamp the optic; it also has to preserve stable positioning through recoil, transport, and repeated removal and reattachment of the mounted scope. A steel upper ring supports that role with the stiffness and durability needed for long-term service. The KR 0.0 mm extension specification indicates a non-extended front-ring configuration, which is appropriate where the existing mount geometry already provides the correct scope position. Finished in black, the part blends cleanly with the rest of the mount and rifle. Overall, this is a purpose-built spare part for keeping a Rusan pivot mount working as intended, with the correct diameter, material strength, and fit for a consistent installation.

About Rusan

Rusan grew from the Rusan family’s metalworking business, which dates to 1983. Željko Rusan opened a gunsmith shop in 1986, and the company began producing scope mounts in 1993. Based in Marija Bistrica, Croatia, Rusan-Mikron focuses on firearms-related metal components, especially mounting solutions for sporting and hunting optics.

The company’s product range includes scope mounts, scope rings, Picatinny rails, and firearm tuning products, along with adapter systems for modern optical devices. Rusan is also known for producing adapter clamps for night-vision and thermal-imaging devices, and it introduced its clip-on sight adapter clamp in 2009. That background is relevant here because it shows a long-standing specialization in precise mechanical interfaces between rifles and optics, which is exactly the role of a part such as a pivot-mount ring.

Main Features

• Manufacturer: Rusan
• Series: Rusan Spare Parts
• Made in: Croatia
• Material: Steel
• Extension (KR): KR 0.0 mm
• Scope / sight type: 40 mm
• Bubble level: No
• Color: Black
• Compatibility: 40 mm

Warranty

10 years. This Rusan mount part is covered by a 10-year warranty period, making it suitable for long-term use as a replacement or service component in a pivot-mount setup.