https://www.polygon.com/2018/7/17/17580798/fortnite-content-update-submachine-gun

Today’s Fortnite content update brings a new submachine gun to Battle Royale, while the drum gun, now called the typewriter assault rift, is coming to the game’s Save the World mode.

“Make enemies think twice before they push you,” the Fortnite team wrote in the official notes. “Run and gun with the new Submachine Gun, ideal for those intense close range battles.”