The Browning integrated scope mount system is machined from 7000 series aluminum and creates and integrated ring and base combo for ultra rigid unit. This system eliminates alignment problems and the possibility of a loose connection between bases and rings. This particular set is designed specifically for the Browning X-Bolt Rifles.Features:Machined 7000 Series Aluminum;Single Piece Ring and Base Combo;.600" high ring height;For scopes up to 56mm objective w/ standard barrel contour;Compatible with Browning X-Bolt rifles only