Has there been any problems with incidents involving assault rifles that were legally owned? I don’t recall hearing about any.
Most assault style weapons used in recent mass shootings have been legally purchased or owned. A few of the many cases where assault style weapons were legally owned by the shooter:
Las Vegas, Nev.—Shooter with more than 20 assault style weapons
and 12 bump-fire stocks killed 58 people and wound over 500 others.
Sutherland Springs, Texas— Ruger AR-556 Rifle; killed 26
churchgoers.
Uvalde, Texas— AR-15-style weapon killed 19 children; 2 teachers
Buffalo, New York— AR-15-style rifle killed 10 shoppers
Boulder, Colorado—Ruger AR-556 semi-automatic killed 10
people including a police officer
Dayton, Ohio— AR-15-style weapon equipped with a 100-round
ammunition magazine to kill nine people and injure over 25 others
in less than 30 seconds at a local bar
El Paso, Texas— AK-47-style weapon killed 22 at a Walmart.
Gilroy, Calif.— AK-47-style weapon wounded 17 and killed three
including a 13-year-old girl and 6-year-old
Pittsburgh, Pa.— AR-15-styleweapon killed 11 worshipers. The
deadliest anti-Semitic attack committed against the Jewish
community in America.