I don't think there is a better bahn mi in Charlotte. Light crispy Vietnamese style baguettes filled with great Vietnamese cold cuts, pate, garlic mayo, pickled radish and carrot, cilantro, and fresh slices of jalapeno. (I like the #7)
The sandwiches are a great deal and my family in Raleigh asks me to bring sandwiches whenever I visit. If you are taking them to-go and not eating immediately, I'd recommend ordering the veggies on the side and adding them after toasting the sandwich.
Like everyone says, it's in Asia Corner Mall which does not have the greatest aesthetic appeal, and the parking lot looks like its been subject to bombing for the past 10 years. If you can get past the dingy exterior, a great sandwich awaits you inside.
Also, they have bubble tea and fresh squeezed sugar cane.