At Krav Maga Raleigh we train weapon defenses constantly, but it's almost always using our empty hands to defend against guns, sticks, knives and the like. Stories like this one about a gas station clerk who fought off a gunman with a mop make me think that we are really limiting ourselves. Now we'll have to put mops up there with empty hands, lassos, chili powder, and a billion other things that have stopped a bad guy with a gun.