Article Photos: Gun group chief says industry didn't cause Newtown 4/7

A box of 9mm bullets sits on display 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)