1) The document provides installation and safety instructions for ERA-TAC mounts with self-locking levers. 2) The self-locking levers allow a rifle scope or accessory to be quickly mounted on a Picatinny rail and can be securely adjusted even if the rail is out of spec. 3) Operators are instructed to open the lever by pushing the unlock catch, close it by snapping it into place, and adjust the gripping force with an included screwdriver.