Max Ammo Upgrade
From WikiRaider
A Max Ammo Upgrade is a Pickup in Lara Croft and the Temple of Osiris. It looks like blue bullets within a blue circle.
When Lara or any of her companions in Multiplayer mode collect the Max Ammo Upgrade, the Ammo Bar gets longer so that the player can deal more damage over a longer period of time by using high powered weapons. Also, the Ammo Bar is instantaneously refilled to the maximum value.
A second kind pick-up, the Max Health Upgrade, extends the Health Bar of the character, thus enabling him or her to take more damage from enemy fire.
In Lara Croft and the Guardian of Light the Max Ammo Upgrades are simply called Ammo Upgrades.