Tiny Tina's Wonderlands: How to Unlock More Weapon Slots

The fourth weapon slot will be unlocked once you reach Eden-6, probably somewhere around level 20 depending on how fast you're burning through

The fourth and last slot in your inventory is called the Artifact slot This empty little box is going to remain unavailable for a long time,

borderlands 3 artifact slot The fourth and last slot in your inventory is called the Artifact slot This empty little box is going to remain unavailable for a long time,

borderlands 3 4th weapon slot Once you've completed Beneath the Meridian you'll have the fourth weapon slot You should complete this around level 20