Extra Ammo, also known as Ranged Mastery before it is unlocked, is a passive ability used by Lie Ren in RWBY: Grimm Eclipse . It needs to be unlocked by defeating 200 enemies with ranged attacks as Ren. When used, it doubles the amount of bullets Ren fires from 4 to 8, but each still only does 10 damage. It requires 1 point to use.