The Taurus family of semi-auto pistols feature the Taurus Security System, which provides instant-ready defense with built-in ability to secure your pistol and make it inoperable at the turn of a key. When the Security System is engaged, the pistol cannot be fired or cocked and the gun’s manual safety cannot be disengaged. As with our revolver Security System, the device is part of the firearm and cannot be lost, and the same special Security Key works for both the revolver and pistol Systems.