Ruger Scope Base Adapter Weaver Mount for Mark II III IV 22/45

The Ruger 90228 Scope Base Adapter is a genuine Ruger Weaver-style base designed for the Mark II, Mark III, Mark IV, and 22/45 platforms, crafted in black anodized aluminum for durable performance and a corrosion-resistant finish. This one-piece scope base adapter accepts Weaver-style rings and provides a secure mounting platform without altering the firearm's original geometry, enabling reliable scope alignment and straightforward installation. It is specifically configured as a Weaver-type mount and is compatible with Ruger precision optics setups, while clearly not fitting Ruger scope rings, ensuring proper pairing with compatible accessories. The adapter integrates seamlessly with Ruger's workflow, offering a lightweight, rigid foundation that maintains accuracy across field and range applications. With its aluminum construction and streamlined profile, the base enhances versatility for hunters and shooters who require a dependable mounting solution on their Mark II, Mark III, Mark IV, or 22/45 configurations. By selecting this Ruger scope base adapter, users gain a practical, factory-backed option that supports Weaver-style optics and facilitates quick, repeatable sighting adjustments during pursuit of game or target practice.