Modern Warfare 3 features a variety of different multiplayer weapons that can be customized with attachments, proficiencies and camouflages. Each weapon in MW3 has to be leveled up to unlock their specific upgrades; Black Ops 3 features a similar system for ranking up the weapons in bo3, but it's not tied to the games global ranking system. Once a weapon has been fully leveled up in MW3, it will unlock the golden camouflage for that specific weapon.
Weapon proficiencies give additional benefits, for example, once the Attachments proficiency has been unlocked, it allows you to equip two attachments to one primary weapon.
You can choose one primary and one secondary weapon for your class loadout.
COD: Modern Warfare 3
Xbox 360, PlayStation 3 and PC. Multiplayer is available on Xbox LIVE (Xbox 360), PSN (PS3) and Steam. Xbox LIVE requires Gold Membership.
Call of Duty: Black Ops 3
Call of Duty: Black Ops 3 is the direct sequel to Black Ops 2. The game features new weapons, perks, scorestreaks, mp maps, and more. You can read more about call of duty bo3 here and get the latest updates. COD: BO3 will be released on the Xbox 360, One, PS3, PS4 and PC.