Specialist Weapons are special weapons in Call of Duty: Black Ops III, Call of Duty: Black Ops 4 and Call of Duty: Mobile that are specific to each Specialist. They grant players powerful, short-use devices to take out enemies aggressively or tactically; players can choose between using their Specialist Weapon or Specialist Ability. They are acquired by filling the power meter around the weapon icon by scoring points or granted after a short amount of time. The meter turns yellow when completely filled, and will deplete over time. Specialist Weapons last until the meter runs out, the user is killed, or the player runs out of ammo; the meter depletes faster when using the weapon.
Within Call of Duty: Black Ops 4, while the method of achieving a Specialist Weapon or Ability is the same, all Specialists have access to an exclusive Special Issue equipment item along with their Specialist kit. However in Zombies, Specialist weapons are tied to the loadout that the match is started with along with if it is apart of the Chaos or Aether storylines.
In Call of Duty: Mobile they have been renamed into Specialist Skills or Operator Skills, but they operate in the same manner.