Nevada laws are relatively easy. Be old enough, be a resident, pass a criminal background check. If you have a concealed weapons permit that has been issued in the last couple of years, the background check is waived.
I am an adult, I am a resident with a CCW permit. I can go to any gun shop give them money, they give me the gun. Takes about 10 minutes. I do have to fill out a simple form that says I am not crazy, or a criminal and that sort of thing.