This is a headshot crit build. Mod for your preferred element (keep in mind Fulmin has innate electrical damage).
- Set the gun to Full-Auto mode and aim for the head.
- You can replace Stormbringer with Primed Fast Hands to reduce the recharge delay to 0.6 seconds in exchange for lower damage.
- [Vigilante Fervor] and Vigilante Supplies gives the weapon a 10% chance to enhance critical hits. Vigilante Supplies does not affect Fulmin's ammo.
- Add [Vigilante Armaments] and [Vigilante Offense] to your sentinel's rifle to increase Vigilante set bonus to 20%.