AR-15: The gun behind so many mass shootings

The AR-15 assault rifle is commonly used in mass shootings in the United States. Here's a closer look at likely reasons why.
Up Next
The AR-15 assault rifle is commonly used in mass shootings in the United States. Here's a closer look at likely reasons why.

Mangled tissue and softball-sized exit wounds: Why AR-15 injuries are so devastating

February 24, 2018 09:53 AM