Bungie has sent out a new trailer that showcases the Last Word, one of the games favorite hand cannons. Last Word evokes a sense of a gun slinging cowboy with "shoot from the hip" action for PvP players in particular. In addition, it also teases the return of Thorn, one of the most iconic weapons from Destiny 1.
Players will have to set off on an extensive questline to obtain Last Word that will doubtless include some amount of Crucible gameplay.
You can check out the datamined information about Last Word in this Reddit thread.