Call of Duty: Modern Warfare 3: Weapon Progression Behind the Scenes Video

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The all-new behind the scenes multiplayer video for Call of Duty®: Modern Warfare® 3. Learn how MW3 evolves gun progression with its new weapon ranking system. The new progression system is designed to improve specific weapon leveling unlocks (camo, attachments, reticles etc.), and features new weapon proficiencies. Proficiencies allow players to specialize their weapons with new attributes (some unique to specific weapon classes).