Leupold STD Two-Piece base, Winchester 70 RVR

• Steel two-piece construction: The steel build gives this base the rigidity needed to keep a riflescope securely aligned under repeated recoil, while the two-piece layout leaves the loading and ejection port more open.
• STD mounting interface: Built for Leupold Standard (STD) rings, this base works within a long-established mounting system that allows broad ring-height choice and straightforward matching to the rifle and scope.
• Windage-adjustable rear system: In the STD setup, the front dovetail ring pivots and the rear windage screws allow lateral alignment during bore sighting, helping preserve more of the scope's internal adjustment range for zeroing.
• Model-specific Winchester 70 fit: This base is made for the Winchester 70 RVR pattern and related actions in the compatibility list, which helps provide proper receiver fit and dependable scope positioning.
• Made in USA: U.S. manufacturing and Leupold’s long experience with hunting optics and mounting hardware make this base a practical choice for rifles that need a durable, field-ready scope platform.

About the STD Series

Leupold STD bases and rings sit in the brand’s traditional steel mounting range, aimed at shooters who want a proven scope-mounting system for hunting rifles and general sporting use. The series is built around a simple idea: provide a secure steel interface that fits a wide variety of rifles while still allowing some adjustment during installation. That is why the STD system uses a front dovetail arrangement with rear windage screws, a layout that has remained popular for bolt-action rifles for decades.

Within Leupold’s lineup, the STD family is a practical middle ground between very simple fixed mounts and more specialized tactical rails. It is especially well suited to traditional hunting optics, where low-profile mounting, dependable alignment, and long-term durability matter more than added bulk. The series includes both one-piece and two-piece bases, along with multiple ring heights, so it can be adapted to different receiver shapes and scope objective sizes. For shooters who prefer a classic steel mounting solution with broad rifle compatibility, the STD line remains one of Leupold’s core options.

About the Leupold STD Two-Piece base, Winchester 70 RVR

The Leupold STD Two-Piece base, Winchester 70 RVR is a steel base set made for rifles that use the Winchester 70 RVR pattern, including the compatible actions listed for this model. Its two-piece configuration is especially useful on sporting rifles because it keeps the receiver area more open than a full-length base, which can make loading and unloading easier and preserves access around the action.

This model is part of Leupold’s Standard (STD) mounting system, so it is intended to pair with STD rings rather than stand alone as a universal rail. In practical use, that matters because the system’s front dovetail ring pivots into place while the rear windage screws allow side-to-side alignment during bore sighting. That can help center the scope more effectively and reduce the need to use excessive internal windage adjustment. For shooters setting up a hunting rifle, that leaves more adjustment available for final zeroing.

The base is made from steel, which favors rigidity and long-term resistance to movement under recoil. With a listed BH height of 4.00 mm, it is designed around a low, receiver-specific fit rather than unnecessary bulk. This makes it a sensible choice for classic bolt-action rifle setups where reliability, clean fit, and compatibility with established Leupold mounting components are more important than modular rail space.

About Leupold

Leupold & Volpel was founded in Portland, Oregon, in 1907 by Fred Leupold and Adam Volpel. The company later developed into one of the established American names in sport optics, with a strong focus on products for hunting, shooting, and outdoor use. Leupold & Stevens, Inc. is headquartered in Beaverton, Oregon, United States, and the business remains family-owned.

Its catalog covers a broad range of optics, including riflescopes, red dot sights, binoculars, spotting scopes, rangefinders, and thermal optics. Leupold introduced its first riflescope, the Plainsman, in 1947, and later introduced the Duplex reticle in 1962, a design that became widely recognized in sporting optics. That background is directly relevant to products like the STD base, because Leupold’s mounting systems were developed alongside its riflescope lines to support practical field use on hunting and sporting rifles.

Main Features

• Manufacturer: Leupold
• Product type: Two-piece scope base
• Mounting system: Leupold Standard (STD)
• Material: Steel
• BH height: 4.00 mm
• Made in: USA
• Compatibility below: Kimber 89 BGR (Round Top), Marlin XL-7, Marlin XS-7, Winchester M70 SA, Winchester M70 LA, Wichester M70 WSM, Winchester M70 WSSM, Winchester Extra long
• Compatibility above: Leupold Standard (STD)

Warranty

Leupold provides a 10-year warranty for this mount base. This stated warranty period supports long-term use on a working rifle and reflects the durable steel construction of the base.