Some Wal-Marts do, yes. I’ve seen this mostly in the South, though they do so here in Missouri, too.
No handguns, just a small selection of various low-end ($$$ wise) but serviceable hunting-quality long guns.
ETA: I picked up my Colt Peacekeeper used-never-fired at a pawnshop in Killeen, TX (Ft. Hood) in '88 at a pawn shop, very reasonable $$$)