It is a fact that a Walmart employee can not sell guns or ammo unless they take and pass a FFL exam. I worked at a Walmart for a while and remember having to take a exam and wait for approval before I could sell guns or ammo. I was left in the dept. alone once before my authorization came through, and a woman and her son wanted some ammo and I couldn't sell it, and she just raised hell with me and said she was going to see the store manager. I explained I was not authorized, and she took off mad, and I never saw her again. Dealing with the public, is not always good.