Im a Danish student, and in my assignment about Gunlaws I have to include the word "Pivot", i've done some research on it, but im not sure if it is used correctly. I hope someone can tell me, if it is, or not, and what else I can do. (Keep in mind this is a "Letter to the editor"-kind of assignment):

"Having a gun is not only a proof of the American freedom, it is a hobby, lifer saver, and for some people it is the pivot of their life."

Thanks in advance.