You know one thing you might option to do is to just get renters insurance. Not only will it cover your guns but also you other valuables (sp?) like your tv, couches, computer. Plus in case of a fire it will help you there as well. Its pretty cheap and well worth it if you thing about it.
When it comes to the guns make sure to take good pictures of them with a white sheet of paper wth the Make Model and Serial number on them in case they do get stolen. Keep the pictures somewhere safe like maybe your work locker or even in a fire proof safe.
If renters insurance is anything like homeowners insurance......guns, cameras & jewelry are only covered up to like $1000.00.
Anything over that requires a seperate rider.