Integration offers strength and consistency.ÂBrowningâ™s TBolt Integrated Scope Mount System unitizes the ring and base into a single, ultrarigid unit.ÂMachined from 7000 series aluminum alloy. This eliminates alignment problems and the possibilityÂof a loose connection between the base and ring.FeaturesMachined from 7000 series aluminum for high strength and durabilityThe integrated design eliminates alignment problems and the possibility of a loose connection between bases and ringsAvailableÂin .400" Low height onlyÂfor scopes with up to a 44mm objective with a standard barrel contour