Leupold STD One-Piece base, Mauser K98 Matte

• One-piece steel base: The single-piece design adds rigidity between the receiver mounting points, helping the scope stay aligned under recoil and hard field use.
• STD mounting interface: Built for the Leupold Standard (STD) system, it works with the front dovetail and rear windage-screw arrangement that allows practical lateral alignment during bore sighting.
• Model-specific Mauser fit: This base is made for compatible Mauser-pattern actions, giving a secure fit without the compromises that can come with universal mounting solutions.
• Matte steel construction: The matte black steel finish keeps reflections low and provides the strength expected from a hunting or field rifle mount.
• Made in the USA: U.S. manufacturing and Leupold’s long experience with sporting optics hardware make this base a dependable choice for traditional riflescope setups.

About the Leupold STD Bases Series

Leupold STD Bases are the company’s traditional hunting-style mounting system, built for shooters who want a proven layout with straightforward installation and dependable scope retention. The series sits as a classic option in Leupold’s mount lineup, especially for bolt-action sporting rifles and other conventional hunting rifle platforms. Steel construction is central to the design, giving STD bases the strength and durability expected from a permanent riflescope mounting solution.

A defining feature of the STD system is its front dovetail ring interface combined with rear windage screws. In practice, this allows lateral adjustment during bore sighting, which helps center the scope more efficiently and preserves internal scope adjustment for actual zeroing. The series includes both one-piece and two-piece configurations, as well as rifle-specific fitments, so the system can be matched to different action shapes and mounting needs. Finishes such as matte, gloss, and silver also let the base blend more naturally with different rifles and optics.

About the Leupold STD One-Piece base, Mauser K98 Matte

The Leupold STD One-Piece base, Mauser K98 Matte is a fixed steel scope base made for shooters building a traditional riflescope setup on compatible Mauser-pattern rifles. Its one-piece configuration creates a solid bridge across the receiver, which can improve mounting stability and help maintain alignment when the rifle is carried extensively or fired repeatedly. For classic hunting rifles and sporterized Mauser actions, that added rigidity is often a practical advantage.

This model uses the Leupold Standard (STD) interface, so it is designed to work with STD rings rather than cross-slot style rings. The system’s front dovetail and rear windage-screw arrangement is especially useful when mounting a scope on older action patterns, because it gives the installer some lateral adjustment during bore sighting. That can reduce the need to use excessive internal windage correction in the riflescope itself. The steel construction supports long-term durability, while the matte black finish keeps the mount visually discreet and well matched to modern matte-finished optics.

With a listed height of 4.00 mm and dimensions of A 22.0 mm, B 102.4 mm, and C 0-13.2 mm, this base is shaped for its specific receiver pattern rather than as a generic rail. It is compatible with Leupold Standard (STD) rings and is suited to rifles such as the Mauser M12 (pre-2019), Mauser M98 Standard, Mauser 98 Action (Without Bulb), and Musgrave K98.

About Leupold

Leupold & Volpel was founded in Portland, Oregon, in 1907 by Fred Leupold and Adam Volpel. The company later introduced its first riflescope, the Plainsman, in 1947, establishing the direction it would follow in sporting optics. In 1962, Leupold introduced the Duplex reticle, a design that became widely recognized among hunters for its practical sight picture. The company moved its manufacturing plant and headquarters to Beaverton in 1968.

Today, Leupold & Stevens, Inc. remains family-owned and is headquartered in Beaverton, Oregon, United States. Its product range covers riflescopes, red dot sights, binoculars, spotting scopes, rangefinders, and thermal optics, with a strong focus on hunting, shooting, and outdoor use. That background is directly relevant to products like the STD mounting system, where practical field durability and rifle-specific fit matter as much as the optic itself.

Main Features

• Manufacturer: Leupold
• Mount Series: Leupold STD Bases
• Made in: USA
• Material: Steel
• Color: Black - Matte
• Height: 4.00 mm
• Dimension A: 22.0 mm
• Dimension B: 102.4 mm
• Dimension C: 0-13.2 mm
• Compatibility: Leupold Standard (STD)
• Fits: Mauser M12 (pre-2019), Mauser M98 Standard, Mauser 98 Action (Without Bulb), Musgrave K98

Warranty

This mount is covered by a 10-year warranty.