The suspect used a Ruger AR-556 pistol in the shootings, police said, after buying it legally from a gun store days before. What is an AR-15-style pistol?

A 14-year-old boy used an AR-platform-style rifle in a high school near Atlanta, Georgia and killed two students and two teachers.

Why do so many mass shooters use AR-15s? Partly because so many Americans have them, partly because they're designed to be easy, cheap and effective.

Why do so many mass shooters use AR-15s? Partly because so many Americans have them, partly because they're designed to be easy, cheap and effective.

The Washington State house approved a sweeping bill that would ban the sale of assault weapons, including entire classes of guns such as popular AR-15 and AK-47 models.

Close-up of AR-15 rifle and magazines with ammo. Credit: JavaDuke/Adobe Stock By a narrow vote, the U.S. Supreme Court on Monday turned down an appeal challenging the constitutionality of a state ...

Maryland banned AR-15-style rifles after the deadly shooting at Sandy Hook Elementary School. State law prohibits the sale, transfer, purchase or receipt of an assault long gun or any copycat weapon.

Hundreds of thousands of Americans own a firearm known as an AR-style pistol, which is modeled after popular semi-automatic rifles like the AR-15 and AK-47.

The protester shot dead at a "No Kings" rally in Utah was a fashion designer who appeared on "Project Runway" -- and was actually hit by event "peacekeepers" who opened fire on a gunman who ...

As of June 1, guns, including AR-15s with certain types of pistol braces that have not been federally registered are illegal. Here's what that means.

May 15—Two Sylacauga men arrested last month on drug charges and for unlawful possession of a short-barreled rifle appeared in Morgan County District Court on Tuesday, where defense attorneys ...

In a huge blow to President Joe Biden’s bid to ban “assault weapons,” a federal court today ruled that the administration’s effort to regulate and tax AR-15 style “pistols” is ...