Call me crazy, but I feel one of my responsibilities as a gun rights advocate is to show people that gun owners are reasonable, responsible people who aren’t a threat to the innocent. If I were to, say, walk into Chipotle carrying an AK at the combat ready, I’m pretty sure I’d accomplish the exact opposite. And I really couldn’t blame regular Joe for being afraid of me. Think about it, guys. If a cop walks into Chipotle with a rifle, people will get scared. If a soldier walks into Chipotle with a rifle, people will get scared. If some unknown guy walks into Chipotle with a rifle, especially if he’s carrying it at the combat ready, people are going to get scared. In America, carrying a rifle into a restaurant isn’t a normal act. Right or wrong, it scares people. And you won’t make people less scared of guns by intentionally scaring them with guns.
Source, which is well worth a read.