Read this Borderlands 3 guide on how to increase weapon slots to increase your carrying capacity. Know which story missions you need to complete to unlock them with this guide!
How To Unlock Weapon Slots
Missions You Need To Complete
|4th||Beneath the Meridian|
Weapon slots are unlocked by progressing through the main story and not by finishing sub-quests or buying upgrades. The third one is unlocked before you leave Pandora, while the fourth and final one is unlocked after finishing the second planet, Promethea.
Unlock Weapon Slots Mission Details
3rd Slot - Finish Taking Flight
In this mission, you are tasked to collect the necessary materials to launch and get out of Pandora. Completing this mission immediately unlocks the third weapon slot.Click Here For The Taking Flight - Story Mission Walkthrough!
4th Slot - Finish Beneath the Meridian
Completing the quest "Beneath the Meridian" unlocks the last weapon slot, enabling you to carry the maximum of four weapons at a time.