Head West with the Pawn Stars when the guys check out a Winchester rifle from the Wounded Knee Massacre. A Native American weapon captured by the U.S. Army, will Rick try to capture it for the shop? Then, a nickel slot machine from the 1940s drops by. Is it worth the gamble? And later, the guys find a stray dog outside the shop and it's up to Chumlee to find its rightful owner.