Colorado-based weapons startup BioFire Technologies has introduced a "smart gun" that uses smartphone-like technology to keep it from being fired by unauthorized users.

ABC News’ Mola Lenghi reports on one company in Colorado using today’s technology to make guns smarter and safer in an attempt to reduce gun deaths nationwide.

ABC News’ Mireya Villarreal and John Quiñones discuss life in Uvalde, Texas, since the horrific shooting on “This Week.”

ABC News’ Martha Raddatz sits down with family members and survivors of mass shootings on “This Week.”

ABC News Live spends the day with the violence interrupters seeking to make a difference in their community as they find themselves at the center of America’s gun violence epidemic.

Washington, D.C., Mayor Muriel Bowser announced new legislation Monday that would give more power to judges to hold defendants awaiting trial for gun-related offenses.

A federal judge in Virginia has ruled that a law banning licensed federal firearms dealers from selling handguns to young adults under 21 violates the Second Amendment and is unconstitutional

A Mississippi man has been sentenced to 14 years in federal prison after illegally manufacturing machine guns

A mom, dad and 3-year-old son were all killed in this weekend's mass shooting at an Allen, Texas, mall.

Texas' gun laws are again in the spotlight after eight people were killed in a mass shooting at an Allen shopping mall.

Every part of the public square has become the scene of an attack of mass violence.

Gun control activists, Texas family members still reeling from losing loved ones and bipartisan lawmakers say they hope their partnerships could usher in change.

The suspect in the Texas mall mass shooting had eight weapons with him at the time, all of which were legally obtained, authorities said Tuesday.

The rotunda of the Texas state Capitol echoed Monday with pleadings from more activists who gathered in Austin to demand the legislature take action on gun reform.

A bill in Texas that would raise the purchase age of AR-style rifles has abruptly advanced, two days after a mass shooting at an outdoor mall near Dallas

Tennessee will be called back on August 21 for a special session.

The Gun Violence Archive shows that there have been more mass shootings than days in 2023 so far.

Greg Abbott and others reacted to the Allen, Texas, mall shooting by focusing on the importance of mental health treatment and prayer

Serbia’s education minister has submitted his resignation following two mass shootings, one of them at a primary school, left 17 people dead

From the assault weapons ban and Brady bill to a push to expand background checks, here is a look at how federal gun legislation has fared in Congress.

New York's attorney general hailed the program as a "landmark event" after more than 3,000 guns were given up.

Leaders in Washington, Colorado and Maryland pushed forward legislative packages that created stricter rules for gun purchases.

Thousands of gun were surrendered in a single day over the weekend across the state of New York in exchange for gift cards, according to the state attorney general.

Thousands of gun were surrendered in a single day over the weekend across the state of New York in exchange for gift cards, according to the state attorney general.

U.S, Canada talk combatting guns, drugs at cross border crime forum.

Colorado’s governor has signed four gun control bills five months after a mass shooting at an LGBTQ nightclub

ABC News' Jay O’Brien sits down with former Rep. Gabby Giffords on Capitol Hill to discuss her organization’s efforts to curb gun violence in the wake of the nation’s epidemic of mass shootings.

Just hours after lawmakers gaveled out of session, Gov. Lee said he'll be calling them back to "pursue thoughtful, practical solutions to keep Tennesseans safe."

A ban on dozens of semi-automatic rifles has cleared the Democratic-controlled Washington state Legislature

Colorado lawmakers have pushed forward a slew of aggressive gun control bills that are nearing the governor’s desk for signatures

In the wake of a deadly school shooting last month, Republican lawmakers in Tennessee are sending to Republican Gov. Bill Lee a proposal that further protects gun and ammunition dealers, manufacturers and sellers against lawsuits

The recently reinstated Rep. Justin Jones carried an infant-sized casket into Tennessee’s Capitol as protesters calling for gun safety legislation outside the Capitol were blocked from bringing caskets inside

Indiana state Senators have advanced a bill that would make state funding available for teachers seeking firearm training, a move critics say could increase the number of guns in school to the detriment of students

Former President Trump, Florida Gov. Ron DeSantis and former U.N. ambassador Nikki Haley are expected to make appearances

Gov. Gretchen Whitmer on Thursday signed new laws implementing universal background checks and safe firearm storage.

"This is happening in America everywhere, and will keep happening until we say enough," Mayor Craig Greenberg said at a news conference Tuesday.

Nashville Metro Council members unanimously voted to reinstate one of the two expelled Tennesee house members.

Rep. Jones was expelled from the state legislature along with Rep. Justin Pearson for protesting gun reform in the wake of the mass shooting at an elementary school in Nashville.

Kentucky has been a permitless carry state since 2019 and does not require background checks for concealed carry.

Reps. Justin Pearson and Justin Jones were expelled for violating decorum on the floor of the Tennessee House of Representatives, but new steps could put one or both back in office within days.

Nevada Democrats and gun control advocates have rallied around a trio of bills amplifying calls for gun regulation while recalling the 2017 Las Vegas mass shooting

The House of Representatives voted to expel two lawmakers for their role in a gun control protest, marking the first partisan expulsion in the state’s modern history.

Two Democratic state representatives have been expelled after they led a gun reform protest in the House chamber last week. ABC News' Andrew Dymburt has more on the political fallout.

Nashville Mayor John Cooper is calling on Tennessee lawmakers to enact red flag laws a week after a shooting at The Covenant School left six people dead.

State Reps. Gloria Johnson, Justin Jones and Justin Pearson face expulsion.

Tennessee Republican lawmakers have taken the first steps to expel three Democratic members from the GOP-dominant House for their role in a recent gun control protest at the state Capitol

Floridians will be able to carry concealed guns without a permit under a bill signed by Republican Gov. Ron DeSantis

A new gun law has already prevented some potentially dangerous people from owning guns

Semi-automatic rifles, such as those used by the Nashville school shooter, cause great damage to the human body. Trauma experts explain why they're so dangerous.

House Speaker Kevin McCarthy said Thursday that lawmakers aren't considering new gun reforms such as an assault weapons ban in the aftermath of the Nashville shooting.