The U.S. was shaken by the deadliest school shooting in nearly a decade when, on May 24, an 18-year-old gunman walked into an elementary school in Uvalde, Texas, and killed 19 children and two teachers with an AR-15-style rifle.

The tragedy has reignited fervent gun control debates across the nation, particularly in relation to the availability of semi-automatic assault weapons, which have been involved in the majority of mass shootings in the U.S. in recent years.