The Armatix smart gun is implanted with an electronic chip that allows it to be fired only if the shooter is wearing a watch that communicates with it through a radio signal. It is not sold in the U.S. Michael Dalder/Reuters/Landov hide caption

itoggle caption Michael Dalder/Reuters/Landov

Kory Watkins, a coordinator for Open Carry Tarrant County, and his wife, Janie, gather for a demonstration in Haltom City, Texas. The NRA posted a statement calling this kind of open carry rally counterproductive; on Tuesday, it retracted the statement. Tony Gutierrez/AP hide caption

itoggle caption Tony Gutierrez/AP

Flags fly at half-staff Tuesday after the deadly shootings at the Navy Yard in Washington, D.C. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Older men may have guns in the home that can pose a risk when people are depressed or not thinking clearly. iStockphoto.com hide caption

itoggle caption iStockphoto.com

A young neighbor watches as police respond to a double homicide in Flint, Mich., on June 30. Organizations including the Michigan Youth Violence Prevention Center are working to help young people choose non-violent solutions to conflict. Michelle Tessier/MLIVE.COM /Landov hide caption

itoggle caption Michelle Tessier/MLIVE.COM /Landov

Former Rep. Gabrielle Giffords, D-Ariz., at a firing range in Nevada earlier this week. Her husband, retired astronaut Mark Kelly, was behind her. Americans for Responsible Solutions hide caption

itoggle caption Americans for Responsible Solutions

A TrackingPoint rifle features a high-tech scope that includes a laser rangefinder and a Wi-Fi server. Courtesy of TrackingPoint hide caption

itoggle caption Courtesy of TrackingPoint

The home in Kentucky's Cumberland County where a 2-year-old girl was shot by her 5-year-old brother with a gun he'd been given as a gift. Investigators say the shooting Tuesday was accidental, but there is a chance some charges might be filed. Dylan Lovan/AP hide caption

itoggle caption Dylan Lovan/AP

Firearms for sale at a gun show in Annapolis, Md., on April 14. Andrew Harnik /The Washington Times /Landov hide caption

itoggle caption Andrew Harnik /The Washington Times /Landov