- For an equivalent perk from Call of Duty: Modern Warfare 3, see Breath.
- For an equivalent perk from Call of Duty: Black Ops, see Scout (perk).
- For an equivalent campaign perk from Call of Duty: Black Ops II, see Hold Breath.
- For an equivalent perk from Call of Duty: Vanguard, see Deep Breath.
Iron Lungs is a tier 3 perk featured in Call of Duty 4: Modern Warfare, Call of Duty: World at War, Call of Duty: Modern Warfare Remastered and a Tier 1 perk in Call of Duty: Mobile. It also appears in Call of Duty: Black Ops 4 in the Blackout mode.
Call of Duty 4: Modern Warfare & Modern Warfare Remastered[]
- "Longer breath for steadier sniper shots."
- — Perk description
Iron Lungs increases the time a player can steady a sniper rifle's scope from 4 seconds to 9 seconds. However, holding the rifle steady until the 9 second limit will cause the sniper rifle to sway uncontrollably, and will take 10 seconds before the sniper rifle can be steadied again, thus, it is reasonable to not steady the player's aim indefinably but just long enough to see a moving target. Iron Lungs is only used for sniper rifles without the ACOG Scope attachment; it will not work for any other weapon, even with the ACOG scope attachment. In Call of Duty 4: Modern Warfare and Call of Duty: Modern Warfare Remastered, the perk is unlocked at level 26. In Call of Duty: World at War this perk is unlocked at level 60.
Iron Lungs is generally useless if Stopping Power is also being used or in Hardcore modes. It should only be used when going for headshots, which is only done for the sake of challenges or to ensure a one shot kill without Stopping Power. This is because snipers steady fairly quickly and any decent sniper will have more than enough time to set up a kill shot in the allotted 4 seconds.
Gallery[]
Call of Duty: World at War[]
- "Longer breath for steadier sniper shots."
- — Perk description
Iron Lungs returns in Call of Duty: World at War and is unlocked at level 60. It functions like its predecessor.
Call of Duty: Black Ops 4[]
Iron Lungs returns in the Blackout mode of Call of Duty: Black Ops 4.
Call of Duty: Mobile[]
- "Hold your breath longer for steadier sniper shots."
- — Description
Iron Lungs returns in Call of Duty: Mobile. It was added in October 2021 as part of the Season 8: 2nd Anniversary update.
Due to the lack of manual steadying, it instead increases the Lung Refresher, which controls how long the gun will remain steady from aiming until it begins to sway.
Trivia[]
Call of Duty: World at War[]
- This perk is absent from the Wii version due to the absence of holding breath.
| ||||||||||||||||||||
| ||||||||||||||||||||
| ||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||