Abstract: When a semi-automatic weapon is live fired, its firing pin is reset, and it is ready to be fired again. The shooter's hands remain in the firing position, and just the trigger finger and trigger are employed. But with dry fire practice, the shooter must remove a hand from the pistol and ratchet the slide to reset the firing pin, allowing the trigger to return to its unfired position. This must be done each time a shot is simulated. This invention provides, by incorporating a simulated ammunition magazine in the pistol's magazine compartment, realistic muscle memory training by duplicating the action of the trigger in normal live fire, the feel and the sound of the release of the firing pin, and the resetting of the trigger for additional trigger activation. This device does not require the shooter to manipulate any parts in order to make it properly interface with the pistol's trigger mechanism.