State Rep. Mike Stewart says he hadn't touched one of these since he patrolled the DMZ in Korea.
"It's an AR-15 knockoff," he says. "It's not made by Colt, but it is essentially the M-16 that was invented for the Vietnam War that over the years has been given a civilian application."
Earlier this week, the Nashville Democrat bought this rifle in a parking lot on his way home from the Capitol. He says he found it in an online classified. $750 cash. No questions asked.