The Warne Maxima Vertical Quick Detach Scope Rings sport the Warne index-able lever system to allow the user to remove the optics from the rifle then reattach it without the loss of zero as well as allowing the location of the lever to be indexed once the rings are affixed to the bases. After the levers are tightened, pull out on the lever, turn it to the desired location then let is snap into place. The Maxima QD Rings have a square stainless steel recoil control key to ensure a positive recoil engagement surface across the entire face of the recoil slot in the base. The recoil control key ensures that the rings will not shift or move under fierce recoil and protects against peening or swaging when mounted on aluminum bases.