The Weaver V425-425M is a precision-engineered 2-piece aluminum scope base specifically designed for the Ruger American Rimfire rifle platform.Weaver V425-425M 2-Piece Aluminum Scope BaseDesigned specifically for Ruger American Rimfire riflesDurable aluminum construction for lightweight strength2-piece design for optimal scope mounting flexibilityPrecision machined for secure optic attachmentEssential for hunters and sport shooters looking to mount optics on their Ruger American Rimfire providing a solid foundation for accurate shooting performance.