Ok well as of late I have been going to quite a few anime conventions. One of the things I do with my cosplay is go nuts with props. My most recent cosplay is Toshiro Hitsoguya (I spelled that wrong) from Bleach. For the moment I have a chain and cresent blade that attached to the hilt. However I and building my own sword that has the cresent blade and chain concealed within the hilt and can be revealed by pressing a button opening the bottom It can only open when facing downward and does not come out with enough force to hurt a person. It only goes as far as my arm is from the ground and stops with the chain However, would most conventions consider this a projectile?