Increases your Maximum Health and gives you a small amount of Health Regeneration.
5 Shots or 6
Killing an enemy causes every shot fired to have a chance to add ammunition into the magazine instead of expending ammunition.
Filled to the Brim
Increases your Magazine Size with all weapon types.
Also increases your Ammo Carrying Capacity with all ammo types.
Double Your Fun
Throwing a grenade while Gunzerking causes you to throw 2 grenades.
The 2nd grenade does not cost ammo.