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Borderlands 4

Can You Upgrade Weapons?

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★ 8 SHiFT Codes as of September 2025
☆ Black Market Location
★ Elemental Weakness Chart
☆ Legendary Weapons
★ Builds: Vex | Amon | Rafa | Harlowe
☆ How to Respec Skill Tree

Borderlands 4 - Can You Upgrade Weapons
There is no way to upgrade individual weapons in Borderlands 4. However, you can upgrade your ammo capacity and find stronger gear as you progress. Read on to learn how ammo upgrades work and where to get better loot.

List of Contents

Can You Upgrade Weapons?

There is No Weapon Upgrade System

There is no way to upgrade or enhance individual weapons in Borderlands 4. Loot levels are fixed based on your character's level when the weapon is obtained. There is no way to increase a weapon’s level later.

This keeps the game’s focus on farming and finding better gear instead of keeping the same weapon throughout your playthrough.

Upgrade Ammo Capacity Through Storage Deck Upgrade

Borderlands 4 - Storage Deck Upgrade
You can upgrade ammo capacity in the Storage Deck Upgrade screen, under the SDU tab. Use SDU tokens in order to upgrade the ammo capacity of the weapon.

How to Get More SDU Tokens

Rely on Loot and Drops for Stronger Weapons

Weapon Chest
The main way to get stronger is by farming bosses, looting chests, leveling your character and completing missions. Higher rarity and better drops will naturally replace weaker weapons and gear as you progress.

How to Get Stronger Weapons

Use Vault Hunter Skills to Enhance Weapons

Skill Tree Weapon Upgrade
You can add skill points in Vault Hunter skill trees that improve weapon handling, damage, reload speed, and other combat bonuses. This offers a way to indirectly enhance how your weapons perform.

Tip: Getting stronger gear will always be better than skill based boosts in the long run.

Find Rare Weapons with Golden Keys

Golden Chest.png

Golden Keys allows you to open the Golden Chest for better weapons and gear. it’s best to save Golden Keys for the endgame to maximize their value for chest rewards scale to your character level at the time of opening.

You can get Golden Keys through SHiFT codes, which require linking your platform account to a SHiFT account to redeem.

Golden Keys Guide

Borderlands 4 Related Guides

TIPS & TRICKS

Beginner's Guide to Borderlands 4: Tips and Tricks

Tips and Tricks Guides

Progression Guides
What to Do First Level Cap: What is the Max Level?
How to Farm Bosses How to Level Up Fast
How to Farm and Use Eridium How to Get More SDU Tokens
How to Crush Jamming Device When Do You Get a Vehicle?
How to Unlock More Weapon Slots How to Increase Inventory Capacity
How to Get Stronger Weapons Can You Upgrade Weapons?
Red Chest Farm Location Should You Do Side Quests?
What is Ultimate Vault Hunter? -
General Guides
What to Buy and Sell First How to Respec Skill Tree
Golden Keys Guide All Bank Locations
How to Store and Transfer Items How to Drop Items
How to Claim Deluxe Edition Items How to Fast Travel
Can You Duel? Pearlescent Rarity
Level Scaling Explained How to Summon Vehicle
How to Link 2K Account Weapon Rarity vs Level
Lost Loot Machine Explained Weapons Levels Explained
Weapon Rarity Explained Fishing Guide
What to Spend Money On Movement Guide
Moxxi's Tip Jar Guide: Location and Rewards Should You Save on Golden Keys?
Legendary Vending Machine Locations Should You Wait on Opening Vaults?
Throwing Knife Farm -
Settings Guides
List of All Controls Matchmaking Guide
Difficulty Differences and How to Change Can You Change Character?
Best and Recommended Settings Can You Change FOV?
Can You Change POV? Compiling Shaders Fix
How to Save and Recover Lost Saves Is There a Minimap?
Combat Guides
Death Penalty: What Happens When You Die? Elemental Weaknesses Guide
Incendiary Damage Guide Shock Damage Guide
Cryo Damage Guide Radiation Damage Guide
Corrosive Damage Guide –

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