Deep Impact


 * For Call of Duty: Modern Warfare 2's weapon attachment with a similar effect, see FMJ. For Call of Duty: Black Ops's perk with a similar effect, see Hardened (perk).

"Deeper bullet penetration."

- Perk description

Deep Impact is a tier 3 perk in Call of Duty 4: Modern Warfare and Call of Duty: World at War that gives a player increased bullet penetration.

Deep Impact decreases damage loss when penetrating surfaces with bullets. This allows users to lose very little damage when shooting through thin materials, while also allowing them to shoot through materials that normally cannot be shot through. It also allows the user to penetrate walls from more angles. Deep Impact does not increase bullet damage to an exposed enemy, and also does not give players the ability to penetrate every material.

Call of Duty 4: Modern Warfare
This perk can also be used to more efficiently dispatch enemies only partially behind cover and would normally be very hard to hit as they would be too small of a target, and as such is a very good complement to high recoil weapons such as Light Machine-Guns and the M14. Deep Impact is also extremely effective on SMGs in Hardcore (besides the AK-74u), as they have low wall penetration, although using this perk with the "spray and pray" tactic is frowned upon.

Call of Duty: World at War
This perk is also very effective in the World at War map "Makin", and "Makin Day", in the raised building (some call it the tree house), for the enemy has nowhere to run except behind thin grass walls.

There are certain challenges that can be completed easier, like "X-Ray Vision", with the help of this perk.

Call of Duty: Modern Warfare 2
Although Deep Impact does not reappear in Modern Warfare 2, the attachment FMJ fills its place; reducing damage reduction of shooting through surfaces.

Call of Duty: Black Ops
The Call of Duty: Black Ops version of Deep Impact is now known as Hardened, but still has similar, if not the same, characteristics.

Call of Duty: Black Ops (Nintendo DS)
This perk has made its way to Call of Duty: Black Ops for Nintendo DS under the name "Paper Walls". Due to limitations of DS memory, the perk simply allows the bullet to travel through one surface, dealing half of the normal damage. Bullets can only pass through one surface and will not pass through players.

Trivia

 * Contrary to popular belief, this perk does not increase damage but only increases bullet penetration through obstacles.


 * The Call of Duty: World at War perk icon shows not only the bullet piercing a surface, but also the cartridge still attached to the bullet in a reversed direction of the Call of Duty 4 perk icon.
 * As seen in game menu source files, the Call of Duty 4 version of Deep Impact was originally Tier 2 perk.