David, in Md. you pretty much have to own a business or be a manager where the owner will write a letter saying you need to carry. Personal protection doesn't enter into it. And sure, you can own a fully automatic weapon, IF you manage to get the class 3 license to do so... good luck with that.
Maryland isn't the friendliest state towards gun ownership, but it's not Cal. either, at least not yet. There are a lot of gun clubs around in Carroll and Frederick county. Welcome to the state; pm me if you have more questions.