On any given day, there will be five to ten students at the school where I teach with "Barrow Guns" t-shirts. Barrow is the local NAPA parts place and gun emporium. The shirts have a rendition of an AR type carbine on the back.
On a related note, the niece of the owner of Barrow Guns came to school the day after the VaTech shootings wearing a Glock t-shirt with a small picture of the pistol on it. She attended HS for a half day, and attended a college about 40 miles away in the afternoon and nights. She was working at the shop part time, mostly handling the internet sales. I told her she might want to change shirts before she went to her college classes. Her mouth dropped open. She had not even thought about it. I was afraid some liberal professor might try to embarrass her if she wore it to college classes.