The Stormslinger Ammo Pouch determines the number of Stormslinger bolts that can be carried in the inventory.
Aloy begins Horizon Zero Dawn with a carry capacity of 20 Storm Bolts. The number increases as the pouch is upgraded through crafting.
Crafting[]
| Upgrade | Capacity | Crafting Cost |
|---|---|---|
| 1 | 30 |  5040 Ridge-Wood 10 Metal Vessel |
| 2 | 40 | 100 10 Bony Meat 1 Squirrel Bone |
| 3 | 50 | 200 1 Rat Bone 1 Squirrel Skin |
| 4 | 60 | 500 200 Ridge-Wood 1 Rat Skin |