Before it was deemed dangerous or politically incorrect for young children to point pistols at each other and fire at will, cap guns were a staple of toy chests. The earliest ones were made of cast iron, later ones of plastic, but all used some form of mild explosive to create a popping sound and puff of smoke when the toy's trigger was pulled. Cap guns are named for this small cap, or capsule, of flammable material, which explodes upon...Continue Reading