Are We Allowed to have a gun in an RV for protection?

As others have mentioned, it depends on your state. I just got my concealed carry license in OH, and I am aware of the states with reciprocity agreements (about 28, I believe, have agreements with OH). We were also told in training that (in Ohio at least), the motorhome is considered our domicile, such that the castle doctrine would apply. For a topic so important and full of legal ramifications, it would be best to get advice from a truly qualified source.