Ruger Weaver-Style Scope Base Adapter — Mark I/II/III & 22/45

This Weaver-style scope base adapter is designed for Ruger Mark-series pistols and the 22/45 platform to provide a platform for mounting Weaver-style rings. It is a one-piece adapter intended for precision target-style use on .22 pistols and is described in vendor material as a 4.5-inch Weaver-style base. The adapter does not accept Ruger-branded scope rings and is presented as an aluminum mounting base.

Key Specifications

• Compatible with Mark I, Mark II, Mark III, and 22/45 Ruger pistols.
• Mount style is Weaver-style.
• The mount length is 4.5 inches.
• Constructed from aluminum as listed in vendor materials.
• This adapter accepts Weaver-style rings.
• The product is a 1-piece base design.
• Rings are not included.
• Some vendor listings indicate the package includes three mounting screws.
• The adapter is intended for use on .22 target pistols (Ruger Mark platforms and 22/45).

This Weaver-style adapter offers a straightforward, lightweight solution for adding a riflescope to compatible Ruger Mark pistols and 22/45 platforms. Its one-piece aluminum construction and Weaver interface let you install a variety of aftermarket rings to set up a focused shooting or target configuration quickly. For shooters looking to add optics to a Ruger .22 pistol, this adapter provides the mounting platform to do so while maintaining a low-profile, purpose-driven design.