Can someone clarify something for me? These weapon cards in the req packs. Is this a campaign thing? A multiplayer thing? What are they and how do they work? Apologies if this has been answered many times.
The weapon cards are used in Warzone, they’re one time use cards. Now there are Weapon Skin unlocks which are permanent, but the weapon cards (this includes weapon variants) you receive in your Req Packs are for use in Warzone.
In warzone only
used in warzone only