Increase your Movement Speed by 4% while in Automatic fire mode.
Level 1
Unknown Caller
Weapon
Increase your Reload Speed by 20%.
Level 4
Nasty Surprise
Explosive Dodge
Generate 5 Ammo after activating Explosive Dodge.
Level 1
Never Look
Armor
Increase your maximum Health by 200.
Level 4
Tribunal Upgrades
Heavy SMG has three elemental effects: Fire imbued Mag Dump -- dealing damage over time, Electrically charged burst mode -- dealing AOE damage on stacks, and Ice infused Automatic -- shots slows enemies.