Justice Department proposes banning rapid-fire bump stocks

A device called a 'bump stock' is attached to a semi-automatic rifle.
In this Oct. 4, 2017 file photo, a device called a "bump stock" is attached to a semi-automatic rifle at the Gun Vault store and shooting range in South Jordan, Utah. The Trump administration is proposing banning bump stocks, which allow guns to mimic fully automatic fire and were used in last year's Las Vegas massacre.
Rick Bowmer | AP