Rusan Rear Ring for Pivot Mount, 40 mm

• 40 mm rear ring upper part: built specifically for 40 mm scope bodies, giving the correct fit for a secure connection within a Rusan pivot mount setup.
• Steel construction: the steel body provides the rigidity needed to keep the optic firmly supported and maintain repeatable alignment during regular field use.
• Pivot-mount compatibility: made as a dedicated rear ring component for the Rusan pivot system, so it suits repairs, replacements, or custom mount builds without changing the whole assembly.
• Individual spare part format: sold as a single upper-part ring, which is practical when replacing only the worn or damaged component instead of a complete mount.
• Black finish: the subdued finish matches most hunting optics and mount hardware while helping the part blend into the overall rifle setup.

About the Rusan Spare Parts Series

Rusan Spare Parts covers the individual components that support the brand’s scope-mount systems, including parts listed in the manufacturer’s scope-mount and ring parts range. Within this family, Rusan groups ring parts under its Other mounts parts offering, where users can replace or configure specific elements instead of buying a complete mount assembly. That makes the series especially relevant for gunsmiths, experienced hunters, and shooters who want to maintain an existing mounting system with the correct factory-matched parts.

The series includes upper ring parts in several diameters, with listings that extend to 26, 30, 34, 35, 36, and 40 mm. Rusan also shows different attachment and height variants across the broader ring-parts range, reflecting a practical design approach focused on compatibility within the company’s mounting ecosystem. Rather than serving as universal accessories, these parts are intended to preserve the fit, geometry, and function of a Rusan mount. For users who rely on pivot mounts and other traditional steel mounting solutions, the series provides a straightforward way to replace a single component while keeping the rest of the system unchanged.

About the Rusan Rear Ring for Pivot Mount, 40 mm

The Rusan Rear Ring for Pivot Mount, 40 mm is a dedicated rear ring upper part for Rusan pivot-mount assemblies built around a 40 mm scope body. Its role is simple but important: it forms the upper clamping section that secures the rear portion of the riflescope within the mount. For a damaged, worn, or incomplete pivot setup, replacing the correct upper ring part helps restore proper support without replacing the entire mount.

Because this component is made from steel, it suits the mechanical demands typically associated with pivot mounts, where repeatable positioning and solid clamping matter more than saving a few grams. The rigid construction helps the ring hold its shape under tightening force and supports consistent contact around the scope tube. In practical terms, that contributes to a stable installation and preserves the precise fit expected from a mount system designed to be removed and reattached.

The part is finished in black and uses a KR 0.0 mm extension specification, keeping it aligned with the intended geometry of the original Rusan assembly. As a purpose-built spare part rather than a generic ring, it is best suited to maintaining an existing Rusan pivot mount in correct factory configuration. For shooters using a 40 mm optic in a traditional pivot system, this rear ring provides the correct form factor for a proper replacement.

About Rusan

Rusan traces its roots to a family metalworking business that dates to 1983. The company, Rusan-Mikron, is based in Marija Bistrica, Croatia, and has long focused on precision-made firearms accessories. After Željko Rusan opened a gunsmith shop in 1986, the business moved further into mount production and began manufacturing scope mounts in 1993.

Today, Rusan is known for its broad range of mounting solutions, including scope mounts, scope rings, and Picatinny rails, along with firearm tuning products. The company also developed adapter systems for night-vision and thermal devices, including its clip-on sight adapter clamp introduced in 2009. That background is relevant here because it shows a clear specialization in the precise mechanical interface between rifle and optic. Products such as this pivot-mount ring reflect that same emphasis on fit, repeatability, and durable metal construction.

Main Features

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

Warranty

10 years. Rusan states a 10-year warranty for this rear ring, giving long-term support for a component intended as a durable steel replacement part within the pivot-mount system.