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Borderlands 4 Guide

How to Unlock the Legendary ARC-TAN Shotgun

Weapons

Legendary Loot

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. Overview 2. How to Get

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