The devils in the details. I've searched the UC site and couldn't find the exact policy so here's the questions:
Are only "NERF" brand prohibited?
Or does it include all Hasbro (parent corp of Nerf) toys?
What about Mattel?
What about air soft "devices"
What about rubber band guns?
I suspect that the policy is rather broad and, at police description, can include any device capable of launching a projectile. Is there an exemption for the Art department for staple guns?
Here's a link to the UC police page of pictures of real verses Nerf guns. I'd like to do one with pictures of various "good/bad guys" and ask if you could tell which is which based on outside appearance.
http://www.colorado.edu/police/reports/Nerf%20vs%20Real%20Weapons%202009%2012%2007.pdf