Just an update:
Swung by Diamondback today, just because I was in the neighborhood. They don't have Mark Kelley's AR there.
They donated it to another organization, and that organization is handling the raffle. I'm going to try to figure out how to buy a ticket or 10 for it. I've seen Diamondback handle raffles before (bought some tickets for an M1 Garand), so I was hoping they would this time. Oh well.
I also talked with one of the guys about the "20 days" rule. Apparently, either it wasn't explained to me well enough, or I just misunderstood. Basically, there's a 20 day wait from the day the FFL takes possession. Diamondback was hit hard by the panic (they have almost no guns in stock, and were having trouble getting more to sell) so they started putting used guns that hadn't passed the 20 day rule out for sale. They said before they made a sale, they would notify the buyer of the waiting time before they could pick it up. For them, it was a move to put product on the shelf. Having worked in retail before, I know one of the worst things that can happen is to have "holes" on your shelves, or shelves/racks/whatever looking bare. Whether they should have done it or not could be up for debate.
Personally, I don't have a problem with it. As long as they're notifying customers, I don't see the issue. It looks bad having empty shelves/racks.
On the other hand, I saw a Glock 30S there. I really wanted it, but it was a LE sale only. If it had been for anyone, I would have risked sleeping on the couch for the next month for it.
First one I've seen in the wild.