Attendee Brooke Roberts examines a machine gun at the SHOT Show

Attendee Brooke Roberts of Tucson, Ariz. examines a machine gun at the DSA booth at the National Shooting Sports Foundation's 35th annual Shooting, Hunting, Outdoor Trade (SHOT) Show at the Sands Expo and Convention Center January 16, 2013 in Las Vegas. The SHOT Show is the largest annual gathering of shooting professionals with more than 1,600 exhibitors and 60,000 attendees expected. UPI/David Becker