Walmart in Seabrook, you used to be able to buy your ammo, Penn International reels, definitely had mini 14s on display, and I believe Bushmaster ARs. Them were the days.
I do remember, I believe in high school times, the routine "is this for a rifle or pistol ?" when buying my .22lr.
Recent years, decent prices on Remington handgun ammo, and .308 hunting sorta ammo (that ran fine in my ARs), shotgun shells, and .22lr, but compared to TS - nah, just a convenient impulse buy when picking up a jug of acetone, paint trays, or motor oil.