The Ruger 90224 Scope Base Adapter provides a reliable mounting platform for optics on Ruger Mark series pistols. Constructed from durable silver aluminum with a 1-piece Weaver base design for secure scope attachment.Ruger 90224 Scope Base AdapterSilver aluminum construction for durability and corrosion resistance1-piece Weaver mount base designCompatible with Ruger Mark II/III/Mark IV/22/45 pistolsAccepts Weaver style rings (rings sold separately)Professional grade mounting solutionEssential for shooters looking to mount scopes or red dot sights on their Ruger Mark series pistols providing a stable and precise platform for enhanced accuracy and target acquisition.