How many carry a backup gun? What is it?

I carry a Glock 43 plus an extra magazine. I do not (yet?) carry a backup gun. If I choose to carry a backup gun, I’ll need to decide if I carry a duplicate of my primary carry gun or something else. Ergo, my questions.Do you carry a backup gun? If you do, what is it? via /r/CCW http://bit.ly/2DiYaoX