Bro Rings XBOLT 34MM High Burnt Bronze Discover Browning's Integrated Scope Mount System. Our 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 and are available in .400" Standard height .500" Intermediate height and .600" High height versions to fit many popular Browning firearms.