Someone who brings an assault rifle in the store while shopping is unstable. It isn't a stable feeling to believe you need an assault rifle inside a store.
This seems pretty simple... do you want one customer to be uncomfortable or all your customers to be uncomfortable?
Ah, a post I can agree with, and I support gun ownership. It's a pity that "corporate" has that attitude. I could care less about "conceal and carry," but this sort of macho parading around is absurd.