After the levers are tightened simply pull out on the lever turn it to the desired location then let it snap into place. When used on the all steel Warne Bases we guarantee accuracy of within 1/1000th of an inch when removing and reattaching the optics. Unique to the industry the Warne Scope Mounts Quick Detach has a square stainless steel recoil control key. This ensures a positive recoil engagement surface across the full width and depth of the recoil slot in the base. The recoil control key guarantees the position of the rings will not shift or move under fierce recoil and also protects against peening or swaging when mounted on aluminum bases.