Abstract: A device for removing a percussion cap from the primer nipple of a firearm comprising a bifurcated plate with a pair of substantially co-planar arms defining an elongated slot therebetween. The slot is open at one end of the plate and closed at the other. The inner edges of the arms are tapered at a predetermined angle, so that distance between the arms decreases from the lower surface to the upper surface of the plate. At the upper surface, this distance is less than the outside diameter of the cap at its skirt, but greater than the diameter of the nipple at the point where the nipple meets the skirt. A handle is joined to the plate at an angle at which sufficient leverage can be generated to remove the percussion cap.