Pawn Stars - Season 12 Episode 19 -

The Pawn Stars are breaking out the big guns as they revisit some of the most wicked items to ever come in the shop: a thermonuclear weapon warhead cover, a desk with a dark secret, a percussion pistol from the 1800s, a child-sized musket, a collection of knives, a thunder mug, and a massive mortar that bowls Rick over.