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Borderlands 4 Guide

How to Unlock the Legendary ARC-TAN Shotgun

Weapons
Legendary Loot
By Mobalytics
Updated on Feb 27, 2026
Feb 27, 2026

Overview

The ARC-TAN is a Legendary Torgue Shotgun. It's KA-BOOM effect unleashes a burst-fire timed grenade.


How to Get

Unlock Location + Farm Method:

The ARC-TAN is available from the Vault Card introduced in Bounty Pack 2, Legend of the Stone Demon.


Table of Contents

1. Overview2. How to Get

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