9 mm gun, what to get?

I have found these websites useful.

http://www.firearmstactical.com/

http://ammo.ar15.com/project/Self_Defense_Ammo_FAQ/index.htm#SHOTGUN AMMUNITION

Here is a useful website. It has a insurance policy to help cover lawyer fees while the investigation is on going if you have used your gun in a self defense manner. Lawyer fees can add up in no time. It's called The Self-defense Shield.

https://www.usconcealedcarry.com/