Is it legal for an individual to own a fully automatic gun in the US?

AW NO I AM GRATEFUL U HAVE ASKED THIS AND I SURE HOPE U GET A VERY GOOD ANSWER PLEASE KEEP THIS TO YOURSELF UNTIL YOU KNOW FOR SURE THEN IF HE IS BREAKING LAWS TURN HIM IN NEVER EVER LET HIM KNOW ~~~GOD FORBID ANOTHER V TECH BLESS U 4 BEING CONCERNED!