Abstract: A trigger safety for a pistol includes a laterally slidable plug incorporated into the trigger that, when slid laterally to extend beyond the confines of the trigger, will prevent rearward movement of the trigger by the plug's interference with the pistol frame. A spring internal to the trigger, imparts a force on plug to retain it positioned in either the safety position or the fire position and resist movement. The plug can be reversed for left-handed users so that the pistol can be placed in a “safe” or a “fire” position with the trigger finger of either hand.