Hi All,
Like many others, my residence is in South Dakota and the address of the mail forwarding service is on my driver license. The address is the physical address of the mail service, and it includes a PMB number that identifies my "box" (Postal Mail Box, I think).
I was told by a local gun dealer that if a physical address where I actually reside isn't on my driver license, I cannot legally purchase a handgun in South Dakota. The example they gave was if someone could knock of the door of the address on my driver license and I answered the door, I would be fine. If not, then no.