I look around on firearms ads both here and at Colorado gun market, and something that I see a lot of is: bring a Colorado ID, or the seller won't sell. What's the deal with this? I've got a Colorado DL, and have lived here for four years or so, but it bothers me. As a private seller, you are not required to have proof of a person's state of residence. That is only required by an FFL. It is perfectly legal for me to go buy a handgun in Wyoming from a private seller. It is perfectly legal for a Wyomingite to come to Colorado and buy a handgun from a private seller.
What's the deal?