All-Star is a trait in Destiny 2 that can appear on 30 weapons. An enhanced version exists on crafted and some newer weapons.
What All-Star does
Collecting ammo loads this weapon from reserves and enhances its damage and reload speed for a duration. Collecting Heavy ammo grants more time.
Enhanced version
Collecting ammo loads this weapon from reserves and enhances its damage and reload speed for an improved duration. Collecting Heavy ammo grants more time.