Specifically engineered for use with Ruger® 10/22® rimfire rifles, the Warne® Scope Mounts Maxima 2-Piece Base for Ruger 10/22 Rifles is a durable, 2-piece scope base, constructed of durable, yet lightweight CNC-machined steel for improved field performance and enhanced stability in virtually any environment. Plus, this scope base comes equipped with a corrosion-resistant anodized finish for lasting field service in harsh, potentially corrosive hunting applications. Compatible with most Maxima scope rings. Includes Torx®-style mounting hardware.