Overkill is a Tier 2 perk from Call of Duty 4: Modern Warfare. This perk is unlocked at Rank 38 and can be selected as Perk 2. It gives you the advantage of carrying two primary weapons at once. The second primary weapon, which replaces the pistol, cannot have a camouflage pattern but all other attachments are available. To make best use of this perk, two very different weapons should be chosen, for example a Submachinegun and a Sniper Rifle. Some players use this perk to carry two assault rifles in order to get two separate grenade launchers.
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