A Glock pistol with an illegal conversion device, sometimes referred to as a Glock switch. The small piece, which is illegal and not manufactured by Glock, can convert a semi-automatic pistol into a fully automatic one. Matt Stone/USA Today Network/Reuters hide caption
Canadian Prime Minister Justin Trudeau speaks at the NATO summit in Hertford, England, on Dec. 4, 2019. On Friday, he announced a national freeze on the sale, purchase, and transfer of handguns. Chris J Ratcliffe/Getty Images hide caption
The U.S. Capitol Dome is pictured in Washington on Tuesday, the day Senate negotiators reached a bipartisan agreement on a gun safety bill. Anna Moneymaker/Getty Images hide caption
President Trump speaks, watched by Sen. John Cornyn, R-Texas, during a bipartisan meeting with members of Congress on school and community safety at the White House on Wednesday. Mandel Ngan/AFP/Getty Images hide caption
The 307-foot tower at the University of Texas at Austin was the site of mass murder 50 years ago Sunday. Harry Cabluck/AP hide caption
Sen. Chris Murphy, D-Conn., (center) and other Democratic senators call for gun control legislation Thursday in Washington. J. Scott Applewhite/AP hide caption