This 1-piece Picatinny/Weaver-style base is constructed of aluminum and includes mounting hardware. The rail allows the user to decide where their scope will be mounted since there are numerous slots, and it will accept both Picatinny and Weaver-style rings. Note: Mounting hardware included. *This Savage base will work with any long action round back Savage rifle with an ejection port. The round back on this mount will accommodate rounded receivers, and guns that have an accu-trigger.