Rusan Roll-off rings with extension, 16.5 mm rail, 40 mm

• Extended roll-off design: The forward extension gives extra flexibility when positioning a 40 mm scope, helping achieve proper eye relief on compact rifle actions without resorting to improvised mounting solutions.
• 16.5 mm prism fit: Built for rifles with a 16.5 mm dovetail, this mount provides a direct, low-profile interface that keeps the optic close to the bore for a more natural shooting position.
• Steel construction: The steel body adds the rigidity needed for repeatable scope alignment and dependable long-term use on hunting rifles and other field guns.
• Roll-off mounting system: Rusan’s roll-off format is designed for a secure mechanical fit on the rifle’s prism, giving the scope a stable base that resists shifting under regular use.
• Model-specific compatibility: Made for platforms such as the CZ 527 and other compatible 16.5 mm dovetail rifles, this mount avoids the compromises that often come with universal ring sets.

About the Rusan Roll-Off Rings Series

Rusan Roll-Off Rings are built around the idea of a rifle-specific steel mounting solution for prism rails, with the series covering several dovetail standards and fastening styles. Within the broader Rusan lineup, these mounts sit as traditional direct-fit options for hunters and shooters who want a solid mechanical interface rather than a rail adapter system. The family includes versions for platforms such as the CZ 550 and CZ 557, and the range is offered with screw, thumb-screw, or quick-release fastening depending on the intended balance between permanence and convenience.

A defining trait of the series is its emphasis on robust machining. Rusan describes these mounts as being made from high-grade steel, CNC-machined from solid material, and finished in black oxide. On the prism variants described by the manufacturer, the recoil lug is milled from solid material rather than added as a separate insert, which reflects a design approach focused on strength and consistent fit. Across the series, ring diameters and heights vary to suit different scopes and rifle geometries, making the Roll-Off family a practical choice for classic hunting rifles that use integral dovetail receivers.

About the Rusan Roll-off rings with extension, 16.5 mm rail, 40 mm

The Rusan Roll-off rings with extension, 16.5 mm rail, 40 mm is a complete steel scope mount intended for rifles with a 16.5 mm dovetail, including the CZ 527 pattern and other compatible actions. Its main purpose is straightforward: to mount a scope with a 40 mm interface securely while also giving additional forward positioning through the extension layout. That extra reach is especially useful on shorter rifle actions or with optics whose tube geometry demands more latitude to achieve correct eye relief.

Because this mount is made from steel, it prioritizes rigidity and stable alignment over minimum weight. In practical use, that matters when the optic must stay firmly seated through repeated handling, transport, and regular firing. The direct prism fit also keeps the setup compact, avoiding unnecessary stack height and helping preserve a low sight line above the bore. For hunting rifles, that usually translates into a more natural cheek weld and faster sight acquisition.

The roll-off construction is also well suited to shooters who want a mount tailored to the rifle rather than a generic cross-platform solution. Instead of adapting from one standard to another, this model is designed around the receiver geometry itself. The result is a mount that suits traditional sporting rifles, supports a clean installation, and gives the user the positional flexibility needed to pair a larger 40 mm scope body with a compact dovetail-based action.

About Rusan

Rusan is a Croatian manufacturer whose roots in metalworking go back to 1983. The company, based in Marija Bistrica, Croatia, expanded into scope-mount production in 1993 and has since built its reputation around precision-made mounting solutions for sporting and hunting firearms. Its product range includes scope mounts, scope rings, Picatinny rails, and firearm tuning components, with a strong focus on mechanical fit and durable construction.

Rusan is also well known for accessories that connect daytime optics with modern observation devices. The company introduced its clip-on sight adapter clamp in 2009 and produces adapters for night-vision and thermal-imaging devices alongside its conventional mounting systems. That combination of traditional gunsmithing background and practical optics-mounting expertise is what makes the brand especially relevant in the field of rifle mounts and related shooting equipment.

Main Features

• Manufacturer: Rusan
• Series: Rusan Roll-Off Rings
• Made in: Croatia
• Scope / sight type: 40 mm
• Rail type: 16.5 mm dovetail
• Color: Black
• Material: Steel
• Compatible platforms: CZ 527, Lynx Light Hunter MA, Lynx Light Hunter SA, Lynx 94 MA, Lynx 94 LA, Lynx 94 SA, Lynx TD 21 MA, Lynx TD 21 LA, Lynx TD 15 LA, Lynx TD 15 MA, Lynx TD 12 LA, Lynx TD 12 MA, Sako TRG 21/41, Sako TRG 22/42, Sako 90 XS Optilock, Sako 90 S Optilock, Sako 90 SM Optilock, Sako 90 M Optilock, Sako 90 L Optilock, Steyr Mannlicher Zephyr Classic, 16.5 mm Dovetail Without Holes, 16.5 mm Dovetail With Holes

Warranty

Rusan provides a 10-year warranty for this mount. That long coverage period suits a steel mounting system intended for long-term use on hunting and sporting rifles.