The Weaver V402-402M is a precision-engineered 2-piece aluminum scope base designed specifically for Savage 10/110 and Ruger American centerfire rifles.Weaver V402-402M 2-Piece Aluminum BaseCompatible with Savage 10/110 rifle seriesCompatible with Ruger American centerfire riflesDurable aluminum construction for reliable performancePrecision machined for secure scope mountingThis scope base provides a stable dependable platform for mounting optics on your centerfire rifle ensuring consistent accuracy and reliable performance in the field.