text:  Carrie Kahn, NPR News, Canoas, Brazil. Now to Oklahoma, where shoppers at a handful of grocery stores can also pick up shotgun shells and bullets with their produce. There are vending machines dispensing ammunition at stores in the state, as well as in Alabama and Texas. Anna Pope of member station KOSU visited one of those stores in Noble, Oklahoma, to hear how some shoppers feel about the ammo machine and what it could mean for gun safety.