Abstract: A locking mechanism is provided for a semi-automatic handgun. The locking mechanism is readily retrofitted onto the back of the handle frame of a used handgun. The locking mechanism includes a pair of guide rails fixedly attached to the back of the handle frame and a movable locking bar slidably carried between the guide rails. The locking bar is movable between two positions. The first is an unlocked position in which the handgun may be fired. The movable locking bar can be readily moved upwardly to a second locked position in which it interferes with the forward motion of the drawbar. Since the drawbar cannot move forward, the handgun cannot be fired, the slide cannot be actuated and the user is unable to chamber a round. The locking bar is unlocked by a key actuated locking cylinder carried in the bottom of the movable locking bar. The user can quickly lock the gun by simply pushing upwardly on the movable locking bar.

Abstract: A locking mechanism is provided for a semi-automatic handgun. The locking mechanism is readily retrofitted onto the back of the handle frame of a used handgun. The locking mechanism includes a pair of guide rails fixedly attached to the back of the handle frame and a movable locking bar slidably carried between the guide rails. The locking bar is movable between two positions. The first is an unlocked position in which the handgun may be fired. The movable locking bar can be readily moved upwardly to a second locked position in which it interferes with the forward motion of the drawbar. Since the drawbar cannot move forward, the handgun cannot be fired, the slide cannot be actuated and the user is unable to chamber a round. The locking bar is unlocked by a key actuated locking cylinder carried in the bottom of the movable locking bar. The user can quickly lock the gun by simply pushing upwardly on the movable locking bar.