Board Thread:General Discussion/@comment-15374346-20130929201816/@comment-3146930-20130929203936

Or the fact that there is a gun in the armory means that no one has used it, which is why it is left behind.

I mean the Hephaestus cabin seems to make things because they can and the Athena cabin is great at making the ideas. Someone at camp could have been like "Can you make this gun shoot CB?" and they did it. However after discovering they stink with guns, they left it in the armory.