
The Harvard Law School in Cambridge, Mass.

The Harvard Law School in Cambridge, Mass.

Families wait as school buses arrive at a unification site following a shooting at the Antioch High School in Nashville.

Bump stocks, attachments that enable semiautomatic rifles to fire at speeds rivaling machine guns, were banned after a 2017 shooting in Las Vegas.


Dutch Merrick, a veteran entertainment industry armorer, with two kinds of cartridges often found on film sets. On the left is a blank, which produces a bang and a flash when fired, and on the right is a dummy round, which is inert and cannot be fired.
