There were 310 million nonmilitary firearms in the United States as of 2009, according to federal figures.

Story highlights

60% -- Americans who supported a handgun ban in 1959

25% -- Americans who supported a handgun ban in 2013

20,947,258 - FBI firearm background checks in 2013

CNN  — 

Following the mass shootings in a Colorado movie theater and an elementary school in Connecticut, the debate over gun control has been reignited: How should the country balance its constitutional right to bear arms with access to deadly firepower?

Here’s a look by the numbers on guns in the United States and Americans’ attitudes toward them.

25 - Percent of Americans who favor a handgun ban, a record low, according to a 2013 Gallup poll.

60 - Percent who supported a ban in 1960, the first year Gallup asked this question.

34 - Percent of Americans who own a gun, rifle, or pistol, according to a Pew Research survey.