NBC Sports, the home to gun-control advocate Bob Costas, is sticking with its commitment to be a sponsor of the National Shooting Sports Foundation 2013 SHOT Show, which is the largest US gun trade show, this week.

The NSSF is headquartered in Newtown, Conn., where a gunman killed 20 children and six adults in an elementary school on Dec. 14 with a semiautomatic rifle.