As I said in another thread, if you had enough metal to smith a sword (and the skill to smith a good one), you would smith a musket instead. A big-bore musket can be loaded with shot (giving you a shotgun) or whatever you have on hand. Panneling nails? Pour in a handful and you've got flechettes that tear through the kind of body armor that police use. Ball bearings? Nasty! A handful of rocks? Even that'll work in a pinch. I'd immagine a load of broken glass would cause a most difficult wound to treat. Especially automobile "safety" glass. There's always rock salt, which stings like fuck, can blind, and is generally considered "less-lethal". I'd imagine that simple firearms like this would be common, even among those who have access to better arms, since all you'd need is powder and a supply of something to shoot. Metal bits like broken screws and stuff, too rusty and damaged to be used, could be used this way.