GPS makes it easy to navigate a family trip, but navigating the patchwork of state gun laws can be difficult. Which states allow carry by non residents? Do you have a duty to notify? Can you carry in the rest stops? What about state parks or magazine restrictions or transporting long guns?

Scott Kappas, attorney and author of Traveler's Guide to the Firearm Laws of the Fifty States, talks about how to use his book to avoid legal hassles when traveling with guns.