To me, carrying an AR (or insert long gun of your choice) in public "just because you can", is tantamount to getting a tattoo on your face and wearing those "stretcher" earrings... Both are legal, but both may have unintended consequences. The AR is going to (probably) draw negative and unwanted attention from the police, and the face tat and your ear lobes flopping around like ears on a basset hound when you're 40 and looking for a job is probably going to get a negative reaction from a potential employer (unless you're applying for a job in a tattoo/piercing parlor).