How do I purchase ammo? Salacia May 23, 2018 00:09 Follow Go to a Joker Ammo vending machine or similar (Ammo box, mobile supply equipped vehicle, mail terminal etc) bring up the inventory screen by pressing the key “F” and click on the “buy ammo” symbol , select the desired amount and click “buy”. Related articles How do I resupply my ammo? Where do I get Grenades at? How do I customize my vehicle? What is Error code 8? How do I Equip a New Weapon? Comments 0 comments Article is closed for comments.