I was curious at what point weapons used in various martial arts are (generally) regulated in the US--I know people need concealed carry permits to carry swords and knives of a certain length in some states, but I have not found much discussion of how, say, clubs like yantoks or practice swords are treated.
Are practice weapons that are lighter or blunter than real weapons completely un-regulated, or do they technically fall under the same rules as standard weapons? Where is the line usually drawn between a piece of sports paraphenalia and a weapon?