Buy your Browning X-Bolt Integrated Scope Mount Accessories from BattleHawk Armory! Browning's Integrated Scope Mount System eliminates alignment problems and the possibility of a loose connection between the base and ring. The ring and base become a single, ultra-rigid unit machined from 7000 series aluminum alloy. The X-Lock scope mounting system that uses four screws per base, replacing the traditional two-screw system.