The Talley Manufacturing Modern Sporting 2-Piece Scope Rings feature high-grade, CNC-machined aircraft aluminum construction with a corrosion-resistant finish for lasting performance, regardless of weather conditions or shooting environment. These scope rings are sold in matched pairs for maximum accuracy and stability. Fits most Mil-Spec 1913 Picatinny rails. 2-piece design. No lapping required. Includes all installation hardware. Made in USA.