Shane Tamura opened fire using an AR-15 rifle in the Midtown Manhattan office building, killing five, including a police officer, and injuring four.

"Using his parents' power drill, Payton Gendron modified the Bushmaster XM-15 semiautomatic rifle in his childhood bedroom so that it could hold a high-capacity magazine to increase its power to kill, ...

Families of eight victims of Washington-area snipers win landmark $2.5 million settlement from manufacturer and dealer who supplied Bushmaster XM-15 rifle used in 2002 shootings; Bushmaster will ...

PORT ST. LUCIE, Fla. (CBS12) — Two 18-year-olds armed with a handgun and an AR-15 style rifle allegedly ambushed two juveniles creating social media content outside a RaceTrac in Port St. Lucie.

According to the police report, Bembry exited his vehicle and pointed a semi-automatic Bushmaster XM-15 assault rifle at the trooper while advancing toward him.

A man accused of firing an AR-15 rifle at a Thurston County Sheriff’s Office deputy during a pursuit last week is in custody, Sheriff Derek Sanders announced Tuesday afternoon on social media.

PUYALLUP, Wash. — A gun owner was robbed at gunpoint last month during an attempted sale of his AR-15 rifle in a grocery store parking lot, the Pierce County Sheriff's Office reported.

Elmore also said that he is looking into suing Remington Arms, which manufactured the Bushmaster XM-15 rifle reportedly used by Gendron.

And 19 days after purchasing the Bushmaster XM-15 rifle at Vintage Firearms in nearby Endicott, Gendron showed Casado the assault rifle, the log says.

The arsenal retrieved from his home had a Smith and Wesson .38 caliber revolver, a Glock 22 .45 caliber pistol, a Bushmaster XM-15 rifle, a Mossberg 12 Gauge 500 shotgun, suppressors, and multiple ...