There is a bug that resets the secondary setup to default. I can do it 100% of teh time by doing a zombie run the clicking multiplayer and then go to loadouts and it will send you back to pvp start screen and on second click it goes in showing all secondaries were reset to pistol...Custom setup i mean.
Greetings, Devil Dog! Welcome to the Call of Duty Forums. It looks like you're looking forward to Call of Duty: Black Ops 6, but haven't created an account yet. Why not take a minute to