Ruger Weaver-Style Scope Base Adapter – Fits Mark I/II/III/IV & 22/45

This one-piece Weaver-style scope base adapter provides a factory-style mounting option for Ruger target pistols. Constructed from black anodized aluminum, it accepts Weaver-style rings for attaching compact optics used in target, range, or precision pistol applications. The adapter is designed specifically for Ruger Mark series pistols and the 22/45 platform and is sold as a single-piece base.

Key Specifications

• The adapter fits Ruger Mark I, Mark II, Mark III, Mark IV and 22/45 pistols.
• The mount uses a Weaver-style interface for common aftermarket rings.
• The body is finished in black anodized aluminum.
• Scope rings are not included.
• It does not fit Ruger scope rings.
• It accepts Weaver-style rings.
• This is a one-piece base adapter.

Built to provide a stable, lightweight mounting platform, this Ruger factory-style adapter gives shooters a straightforward way to add optical sights to their Mark-series or 22/45 pistols. Its anodized aluminum construction balances durability and weight, while the Weaver interface keeps compatibility with a wide range of aftermarket rings used in target and precision work.