MW4 patch notes: October 28, 2026

The first weapon tuning update. Infinity Ward describes it as focused on “normalizing hit location damage for a more consistent TTK and general improvements to SMG performance”, with the changes “primarily targeted upper limb damage multipliers for Submachine Guns”. Every published pre and post value is collected on the weapon tuning page; the affected weapon pages carry their own entries.

October 28, 2026

The first weapon tuning update. Infinity Ward describes it as focused on “normalizing hit location damage for a more consistent TTK and general improvements to SMG performance”, with the changes “primarily targeted upper limb damage multipliers for Submachine Guns”. The full published table is on the weapon database page; each affected weapon page carries its own entries.

PLAYLIST

• Updated Oct 27: Shipment 24/7 (New), Frontline, Inflation, Collateral, Kill Block: 6v6, Gunfight (New), Gun Game (New).
• Free For All: the score limit remains at 30, with a maximum 2 player party limit.
• A note on FFA: matches were often going to time, so a quick tweak to the score limit was made. After feedback, the score limit has been adjusted back to 30 for the FFA mains, and in a later backend update Final Killcam will be restored, as it has been in recent MW titles.

GLOBAL

MOVEMENT

• A movement exploit was identified in which a player can immediately dive after a sprint jump to gain a speed boost. As a short-term mitigation, the dive’s velocity was reduced by 23%. Infinity Ward is working on a long-term solution so the dive’s velocity is not impacted, and will share more in a future update.

UI/UX

• Progress counters were missing from Camo and Special Camo unlock requirements across several weapon categories.
• The Fungal Grid Camo was not visible in the Camo selection menu.
• In match, the Tracked Near Complete Camo menu would not automatically track the next Camo Challenge after unlocking a Camo.
• Military Camos showed as locked after the player had Prestiged the weapon.
• Prestiging from the DMZ FOB did not correctly reset Multiplayer Loadouts.
• Calling Card unlock requirements could overlap with the progress bar.
• The Crossfire and Argonaut Killstreaks displayed incorrect icons in the Multiplayer Killfeed.
• On PC, players could not click and drag the scrollbar in the Tracked Near Complete Calling Cards menu.
• Removing an attachment from a Blueprint and then re-adding it did not restore its unique visual while still in the menu.

MULTIPLAYER

Weapon tuning

The full published table is on the weapon tuning page. Fifteen weapons had figures changed: Han 86, Kastov 762, M4, Oden, Hyeon Burst, Patriot XMR, ISO Nightshade, PPSh-41, VEL 46, Wz.55 Striga, X-58 Nyx, APOC-338, FiNN LMG, Type 73 and Warlord. Every SMG had its six upper-limb damage multipliers raised from 0.95 to 1, while APOC-338 and FiNN LMG were both reduced.

Bug fixes

• Fixed a visual issue where the Mosin-Nagant’s firing pin could appear in the incorrect position after firing the final round.
• Taking damage now interrupts health regeneration from the Quick Fix Perk. Infinity Ward’s explanation: “We noticed an issue where Quick Fix would continue to regenerate health even after taking damage. This was causing players to be more tanky than intended. Damage will now properly interrupt Quick Fix.”
• Addressed an exploit involving the Riot Shield entering out of bounds areas.
• Improved the visibility of UAVs on Sentry.
• Certain Melee Kills, Backstabs and Takedowns were not tracking correctly for some Challenges.
• Increased the maximum range cutoff for Point Blank Challenge tracking.
• Decreased the minimum range cutoff for Longshot Challenge tracking.
• Players would incorrectly appear as Reece when loading into Gun Game, regardless of their selected Operator.
• Updated the Quick Fix Perk hitmarker icon.

DMZ Possum Trait

Infinity Ward explains the change: “The intention for Possum is to give a high level operator a second chance. With the current iteration, Possum was being used as a combat mechanic instead of a survival mechanic. These tweaks are meant to prevent players from getting right back into the fight which they had just lost.”

• The Possum Trait has been adjusted so you are now unable to activate Possum while the team that killed you is nearby, or until 4 minutes have passed. The range and duration are tunable going forward.
• Fixed a bug where Possum could revive players who had already abandoned their Operator, which would put them in an unplayable state.
• Fixed an issue where players could encounter a black screen after their entire squad was eliminated while a teammate had the Possum Perk equipped.
• Fixed an issue where using the 3D Printer to add items to the Backpack during deployment could cause players to deploy into DMZ without their Free Loadout weapons or equipment.
• Closed several exploits in DMZ.
• Fixed an issue where weapons could unintentionally drop when moving them from the Primary Weapon slot to the Backpack.
• Fixed an issue where players were not receiving the 3-Plate Armor Vest reward upon reaching DMZ Level 37.
• Fixed an issue where weapons could disappear after repeatedly swapping between weapon slots while using a Backpack with weapon storage.
• Fixed an issue where the Airbase Access Card could not be upgraded during a Story Mission if it was stored in the Secure Slot.
• Fixed an issue where automatically marked Order mission items could lose their Ping markers after players pinged a loot container.

KNOWN ISSUES

• The Patriot XMR Platinum Camo Challenge is not tracking correctly in the UI. The challenge can still be completed and progressed despite not displaying accurately.
• Some Calling Card challenges are not tracking as intended.
• An issue with Best Play selection logic in Multiplayer modes: players who enter Classic Prestige via DMZ menus instead of MP menus are unable to make new MP classes until previously created MP classes with relocked Loadout items are deleted.

Sources

• Infinity Ward: MW4 launch patch notes, October 28, 2026 section, checked October 30, 2026.
• MW4 weapon tuning: the October 28, 2026 balance pass.