The DNZ Game Reaper one piece scope mount is a fantastic option for every type of rifle. These rings a precision machined from a solid block of aluminum. They are specifically designed to optimize the installation of optics on your favorite rifle. DNZ Products are proudly made in the USA and they have a mount for nearly every brand and model of rifle. Specifications and Features: DNZ Products Game Reaper 16280 Ruger American Short Action Fits Left and Right Hand Rifles 30mm Scope Tube Medium Height Mount 1.06" From Receiver to Centerline Hole to Hole Spacing .86", 3.01", .86" Dimension from outside of back ring to outside of front ring is 3.97" .63" Wide Rings Black Finish Made in the USA