A convention attendee looks through the sight of a Sig Sauer semiautomatic rifle at the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The National Shooting Sports Foundat

 

              A convention attendee looks through the sight of a Sig Sauer semiautomatic rifle at the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The National Shooting Sports Foundat
A convention attendee looks through the sight of a Sig Sauer semiautomatic rifle at the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The National Shooting Sports Foundation was focusing its trade show on products and services new to what it calls a $4.1 billion industry, with a nod to a raging national debate over assault weapons. (AP Photo/Julie Jacobson)