menu
MobalyticsUse your favourite features in-game with our Desktop App
Borderlands 4 Guide

How to Unlock the Legendary Plasma Coil SMG

Weapons
Legendary Loot
Updated on Oct 31, 2025
Oct 31, 2025

Overview

Plasma Coil returns from Borderlands 3 as a Legendary SMG that fires high (elemental) damage, slow moving, orb-like projectiles.

While its slow projectiles can be an issue, this is easily overcome by simply moving into close range and fighting enemies head-on. While nothing flashy, it's definitely a solid option overall.

borderlands 4 plasma coil smg

How to Unlock

Unlock Location:

  • Progress through the story until reaching "The Timekeeper's Order" a Main Quest in Dominion area.
  • You will encounter The Primordial Guardian Timekeeper, the last major campaign boss.

Farm Method:

  • Defeat The Primordial Guardian Timekeeper and finish the main story mission.
  • After completing the story mission, return to his arena.
  • Use the Encore Machine nearby to reset the fight.
  • Repeatedly defeat The Primordial Guardian Timekeeper until Plasma Coil drops.

Latest Guides

Borderlands 4: Complete Legendary Drop Rates Guide
By EpicNNG Updated on Jan 28, 2026
News
Late Game
Weapons
+1
News
Late Game
Weapons
Legendary Loot
Borderlands 4 has a pretty huge patch dropping tomorrow, or so it's assumed
By EpicNNG Updated on Jan 28, 2026
News
Discussion
News
Discussion
Borderlands 4 Gearology - Guns & Gear Explained
By Ratore Updated on Jan 23, 2026
Late Game
Mechanics
Weapons
+4
Late Game
Mechanics
Weapons
Enhancements
Class Mods
+2
Borderlands 4 Weekly Activities and Legendary Rewards
By EpicNNG Updated on Jan 22, 2026
News
Late Game
Map
+1
News
Late Game
Map
Legendary Loot