Lightweight. Easy to conceal. Exceptionally reliable. The Taurus Defender 605 is finely tuned to deliver the ultimate peace of mind for home and personal defense situations. Taurus revolvers all 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.