Designed and used by our Beretta Handgun Shooting team, the official practical shooting team. Competition Self-Locking Disassembly Lever for 90 Series Full Size pistols. This version for left-handed shooters has the takedown ledge on the Right side of the pistol, next to the takedown locking button. To Install This Item: Press the release buttonTurn and remove the original latchInsert the body of the latch for left-handers (to which the blade and the screw that stops it has been removed)Position the blade on the latch body and fix with the supplied screw, we recommend the use of a braking thread locker (non-locking) Beretta 90 Series Full Size Left Hand Competition Self-Locking Disassembly Lever C8G971