Abstract: A cap firing mechanism for use with a cap strip and in a toy having a wall and a housing, and comprising an anvil mounted on the wall and a firing mechanism mounted in the housing. The mechanism includes a mounting pin connected to the housing, and a hammer mounted on the pin. A hammer spring connected to the hammer urges the hammer against the anvil in order to fire a cap between the hammer and the anvil. An extended portion of the hammer is manually engageable in order to swing the hammer away from the anvil, and the hammer spring returns the hammer against the anvil when the extended portion is released. An advance wheel is mounted on the pin adjacent the hammer, and an advance mechanism connects the hammer with the advance wheel. The advance mechanism turns the wheel in one direction to advance the cap strip between the anvil and the hammer, the movement of the hammer operating to rotate the advance wheel. The wheel holds the strip during the firing of a cap.