Deep Impact

From the Call of Duty Wiki

Deep Impact is a Call of Duty 4: Modern Warfare and Call of Duty: World at War perk that gives a player increased bullet penetration. The exact effect is that bullet damage is only reduced by half of what it normally is. This will allow a player to shoot through higher density materials such as bricks, metal sheets and concrete barricade blocks (not solid concrete walls of buildings) with reduced damage. Deep Impact will also decrease the damage reduction of less denser materials such as wooden fences and drywall; it will not increase bullet damage to an exposed enemy. Deep Impact also will not give players the ability to penetrate every material.

[edit] Additional Multiplayer Tactics

Deep Impact is a favorite among snipers and light machine gunners. It can also be very effective with players who can expertly read the minimap and know common hiding spots that are behind cover. It can be used to take out players behind most materials at long ranges or clear a room/hallway without ever entering it. Learning how the players use cover and keeping an eye on the map can provide an easy target. When fighting from a window it is smarter to move to the back wall or leave the room completely. Remember that crosshairs will provide a hit indication so if a player is stuck behind an object it may be better to get up and make a break for it.

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.

This perk is also very effective on the World at War map Makin 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.

In Modern Warfare 2, the deep impact perk can be unlocked as an attatchment. Known as FMJ (Full Metal Jacket.)

[edit] Trivia

• According to the perk trailer, Deep Impact was originally to be designated as a Tier 2 perk.
• A Thompson with deep impact will be very effective a shooting through walls, especially the concrete ones in Asylum.^[1]
• This perk is similar to FMJ in Modern Warfare 2.

[edit] References

Perks of Call of Duty 4: Modern Warfare
Tier 1 Perks	C4 x2 · Claymore x2 · RPG-7 x2 · Special Grenades x3 · Frag x3 · Bandolier · Bomb Squad
Tier 2 Perks	Stopping Power · Juggernaut · Sleight of Hand · Double Tap · Overkill · UAV Jammer · Sonic Boom
Tier 3 Perks	Extreme Conditioning · Steady Aim · Last Stand · Martyrdom · Deep Impact · Iron Lungs · Dead Silence · Eavesdrop
Kill Streak Perks	3: UAV Recon · 5: Airstrike · 7: Helicopter Support

Perks of Call of Duty: World at War
Tier 1 Perks	Special Grenades x3 · Satchel Charge x2 · M9A1 Bazooka x2 · Bomb Squad · Bouncing Betty x2 · Bandolier · Primary Grenades x2 · M2 Flamethrower
Tier 2 Perks	Stopping Power · Fireworks · Flak Jacket · Gas Mask · Juggernaut · Camouflage · Sleight of Hand · Shades · Double Tap · Overkill
Tier 3 Perks	Deep Impact · Extreme Conditioning · Steady Aim · Toss Back · Second Chance · Martyrdom · Fireproof · Dead Silence · Iron Lungs · Reconnaissance
Vehicle Perks	Water Cooler ·Greased Bearings ·Ordnance Training ·Leadfoot ·Coaxial Machine Gun
Kill Streak Perks	3: Recon Plane · 5: Artillery Strike · 7: Dogs