Kormash - Borderlands 3 Farming Guides
Location: Ashfall Peaks on Gehenna
Part of: The Name of the Law Story Quest (Bounty of Blood DLC)
Drops: Stonethrower (Jakobs AR)
Kormash is one of the bosses you face in the Bounty of Blood DLC of Borderlands 3; you'll face off against him during The Name of the Law Story Quest. Once you've beaten Kormash at least once, as with every other boss in the game, to face him again all you need to do is enter the arena that you faught him in.
As far as loot goes, Stonethrower (Jakobs AR) is the only item on Kormash's dedicated drop loot list. This item is unique to Kormash and doesn't drop anywhere else in the Bounty of Blood DLC for Borderlands 3; which means if you want one you're going to have to farm Kormash himself.