In most states when your RV, mobile home, travel trailer etc. is attached to your vehicle and is mobile it falls under the same laws as a vehicle while in transit and any firearm within must be carried in the same manner as in the vehicle, again depending upon the state laws you are in. When the RV, mobile home,travel trailer is unattached and setup it is considered a home and is goverened under the same laws as your house including your constitional rights. But each state is different and the laws for mobile change regularly so you have to check them frequently. I was in law enforcement for 33 years in Tennessee and in Florida and the firearm laws changed several times before I retired 2 years ago. To keep from having your firearms consficated while traveling be sure to check the laws for each state you will be traveling in. These laws can be found onine for each state.