The American Rifle Company M-Brace Scope Mount is the ultimate scope mounting system, derived from a first principle approach to defining and solving the problem of securely attaching high precision optical devices to a high precision rifle. The M-Brace features a serrated accessory interface, effortless anti-cant scope installation, and has a recoil proof non-marring scope grip. FeaturesSerrated accessory interfaceEffortless anti-cant scope installationRecoil proof non-marring scope gripUseful level vialExcellent return-to-zeroDesigned to fit picatinny rails IncludedM-Brace MountBubble level and mounting screw, M5 x 16mm torxT25 L-key