A card is selected from a deck, a sticker is signed by your spectator and placed on to the face of the chosen card. The chosen card is now pushed in to the deck and the deck is placed back into the box.
The spectator is now requested to hold the box in the air as you pretend to fire two shots into the deck with your "finger" gun or magic wand. The cards are removed from the box and run through face up until you reach the selected card with two bullet holes in it.
The card is removed by your spectator and is seen to be his signed selection!