Last time I bought ammo from WM, the cashier was a nice little-old-lady. The handgun/age-21 question comes up on the register and SHE goes off into a rant punching the register buttons *hard*.
"HANDGUN? NO, IT'S FOR A KITE! IT'S NONE OF THEIR BUSINESS!"
Then, she put it in a bag, and in a granny-tone of voice, asked me where I was shooting today, told me to have fun, and told me to come back if I ran out of ammo.
I look for her whenever I go there to buy ammo now. hehe.