Optilock Sako Extended Base, Stainless Steel

• Extended base design: The longer base footprint gives more flexibility when positioning scope rings, which helps when fitting scopes with short mounting tubes or when extra eye-relief adjustment is needed.
• Steel construction: A steel base provides a rigid mounting platform that resists movement under recoil and keeps the optic aligned over time.
• Stainless steel finish: The stainless build suits rifles used in wet, cold, or variable weather, helping the mount better withstand corrosion during field use.
• Made for Sako actions: This base is built for a defined group of Sako rifles, giving a correct interface and a secure fit without relying on generic mounting solutions.
• Low 8.00 mm base height: The compact base height helps keep the scope mounted closer to the bore, which supports a more natural cheek weld and consistent shooting position.

About the Optilock Series

The Optilock series is Sako’s dedicated line of scope mounting components, developed for shooters who want a secure, model-specific connection between rifle and optic. The range includes bases, rails, and rings for compatible Sako and Tikka rifles, with versions tailored to different receiver interfaces and scope configurations. Rather than treating the mount as a generic accessory, the Optilock concept is built around precise fit, repeatable alignment, and dependable recoil control.

Within the series, steel construction is a defining characteristic. Optilock components are machined in robust materials, including stainless steel and CrMo alloy versions, to provide the rigidity expected on hunting rifles and other hard-used sporting firearms. In ring-equipped setups, the system is also known for its polymer insert design, which helps distribute clamping force more evenly around the scope tube and reduces the risk of marking the optic. Across the series, the emphasis is on practical durability, stable zero retention, and compatibility with the rifle platforms the mounts were designed to serve.

About the Optilock Sako Extended Base, Stainless Steel

The Optilock Sako Extended Base, Stainless Steel is a fixed scope base intended for shooters who need a strong, weather-resistant mounting foundation with extra room for scope positioning. Its extended base layout is especially useful when a riflescope has limited tube space between the turrets and objective bell, or when the optic must be moved forward or rearward to achieve proper eye relief. That added flexibility matters on hunting rifles where stock shape, shooting position, and clothing layers can all affect how the scope needs to sit.

The base is made from steel, which gives the mount the stiffness needed to support consistent optic alignment and dependable performance under recoil. In this stainless version, the material choice also makes sense for rifles carried in rain, snow, or damp terrain, where corrosion resistance is a practical advantage over time. With a BH height of 8.00 mm, the base keeps the mounting platform relatively low, helping maintain a closer optic-to-bore relationship and a steadier head position behind the rifle.

This model is designed for a broad range of Sako 75, Sako 85, classic Sako, and TRG-S variants, making it a specialized solution for owners of those actions rather than a one-size-fits-all mount. It also accepts Optilock rings, allowing the shooter to build a complete mounting setup around the rifle and scope combination. The result is a practical base for traditional hunting optics where secure fit, placement flexibility, and durable construction matter more than unnecessary complexity.

About Optilock

Optilock is Sako’s own line of riflescope mounting systems, developed specifically for Sako and Tikka rifles. The range covers bases, rails, and rings designed to match the receiver interfaces used on those rifles, giving shooters a mounting solution built around correct fit rather than broad cross-platform compatibility. In the Optilock system, steel construction is central, with components produced in materials such as CrMo alloy and stainless steel to provide the rigidity expected from serious hunting and sporting rifle mounts.

One of the better-known features in the line is the use of polymer inserts in Optilock rings. These inserts help spread clamping force more evenly around the scope tube and reduce the chance of marking the optic during installation. Across the range, the design approach is practical: stable mounting, protection for the scope, and versions in different diameters, heights, and base formats to suit different rifles and optics.

Main Features

• Manufacturer: Optilock
• Made in: Finland
• Material: Steel
• BH height.: 8.00 mm
• Compatibility: Sako 75 I, Sako 75 III, Sako 75 IV, Sako 75 SM, Sako 75 V, Sako 85 L, Sako 85 M, Sako 85 S, Sako 85 SM, Sako 85 XL, Sako 85 XS, Sako L461 Vixen, Sako L579 Forester, Sako L61R Finnbear, Sako L691, Sako M591, Sako MA 05 L, Sako MA 05 M, Sako MA 05 S, Sako MA 05 SM, Sako MA 05 XS, Sako S491, Sako TRG-S M995, Sako TRG-S M995 Magnum, Sako VL63 Finnwolf

Warranty

2 years. This Optilock base is covered by a two-year warranty period.

In the Box

• Optilock Sako Extended Base, Stainless Steel
• 4 mm Allen key