If you have just unlocked a new gun in Black Ops 7: Endgame and it feels useless without attachments, you are not alone; this mode can be a grind unless you lean into how weapon XP really works and pair that with a smart loop, almost like you would when you stack advantages in a CoD BO7 Bot Lobby run, and once you understand that the gun in your hands at the moment an objective completes is the...