Uh, when I first got an AR-15 about ten years ago, I went to Walmart first to see what they had. They had a bunch on a rotating rack you could pick up. Magazines and ammo were inside a glass shelf next to it. You just bought it all there, the only thing they did was walk you out of the store before handing it over.

I didn’t actually end up buying one though, I was given one by a local gun store as payment for saving them about $3500 a year on their IT bill and building them PCs. A nice little mostly custom AR chambered in .300 BLK. My father-in-law took it hog hunting one year.