This heavy-duty base was designed with input from military, law enforcement and other tactical shooters. It features a lower height than the regular EGW base and is constructed from stronger 7075 aluminum for increased strength and rigidity. The rail profile features a full width top profile (no length-wise center cut) for a more positive optic mounting surface. Note: Mounting hardware included. *This Savage Flat Back mount works for long action older model Savage rifles that do not have an accu-trigger.