Eating the bullets of an enemy sounds funny and a cool concept overall, but this just feels like a Disarm with extra steps, might as well just add an item with a disarm active.
What if it temporarily reduced their mag ammo? Like the mag size all toghether? like they get -50% ammo for the duration or something. (Think of it like how vindicta 2 gives bullets while in flight, but it would reduce bullets intead)