What do you need to prove residency other than CO ID?

[Atrain1]

I just called Wal-Mart and told them I had a out of state ID but other stuff to prove residency. They told me I could come down and purchase a Firearm. He asked what kind of gun I wanted and I told him a AR15, he said come on down.

[cfortune]

I just called Wal-Mart and told them I had a out of state ID but other stuff to prove residency. They told me I could come down and purchase a Firearm. He asked what kind of gun I wanted and I told him a AR15, he said come on down.

The Wal-Mart near me has a sign stating they can legally sell firearms to some nearby state residents. I can't recall which ones but there was 6 or 7 of them.