We eat at five guys fairly regularly without any problems and I am pretty sensitive. They don't have gluten-free buns but their lettuce wraps are delicious! All the fixings are gluten free and they are good about changing their gloves. The fries are gluten free, they are the only thing in the fryer. My son still likes to have buns so we just bring our own for him.
— Somewhat
— No gluten-free information on the menu
— Most/All
— Excellent