Don't buy a gun or bother bringing one camping, rent one at a range to get an authentic Amerifat experience safely and responsibly.
If you want to do dispersed camping (camping in the middle of the woods without any designated sites), most National Forest and Bureau of Land management land will allow you to do that (unlike National Parks).
At the end of the day, be safe. Bring plenty of water and download offline maps.
https://en.wikipedia.org/wiki/Death_Valley_Germans 