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 Feb 19, 2026
News
Late Game
Weapons
+1
News
Late Game
Weapons
Legendary Loot
Borderlands 4 Weekly Activities and Legendary Rewards
By EpicNNG Updated on Feb 19, 2026
News
Late Game
Map
+1
News
Late Game
Map
Legendary Loot
Borderlands 4's Weekly Updates are steadily improving, and I hope it continues.
By EpicNNG Updated on Feb 14, 2026
Discussion
Discussion
Borderlands 4's newest Bounty Pack DLC Is supposedly much larger than its predecessor
By EpicNNG Updated on Feb 11, 2026
News
Discussion
News
Discussion