How to Unlock the Legendary Chaumurky Grenade

Chaumurky is a Order Grenade

Chaumurky Incessant Continuously homes in on all target around the Vault hunter

Unlock Location:

• Progress through the story until reaching southwest of The Fadefields.
• You will find a Drill sight icon to the bottom left outside of Fortress Indomita.
• Complete the Drill Sight called "The Pitted Stain" and at the end you will face 3 Foundry Freaks.

Farm Method:

• Defeat the 3 mini bosses in The Pitted Stain Drill sight.
• After use the Encore Machine nearby to reset the fight.
• Repeatedly defeat 3 Foundry Freaks until Chaumurky drops.