Modern Warfare 4 (MW4) Guide & Beta Database

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Latest documented evidence to check first

The final major documented Beta weapon-tuning pass is dated August 31, followed by Infinity Ward's September 1 wrap-up of launch priorities. Start with the August 31 weapon profiles and the separate August 28 M4 base profile, then use the earlier playlist and mode records alongside the strongest screenshot-backed settings, attachment and camo records.

POST-BETA STATUS

The MW4 Open Beta has ended

The MW4 Open Beta has ended. It ran from August 28 through September 1, 2026, ending at 10:00 PM PT after an extension from the originally scheduled 10:00 AM PT conclusion. Modern Warfare 4 launches October 23, 2026. Beta data remains available here as dated pre-release evidence.

Modern Warfare 4, often shortened to MW4, is the 2026 Call of Duty title led by Infinity Ward. The full game is scheduled for October 23, 2026 on PlayStation 5, Xbox Series X|S, PC and Nintendo Switch 2. It includes Campaign, Multiplayer and DMZ, with Modern Warfare 4 content also planned to connect with Call of Duty: Warzone after launch.

The MW4 Beta was a limited pre-release build. Weapon balance, playlists, spawns, audio and unlock requirements could change between test weekends and again before release. This site keeps Beta observations clearly dated instead of presenting every early value as a permanent rule.

BETA OPERATIONS

MW4 Beta Weapons, Loadouts and Progression

The documented Open Beta roster contains 22 accessible weapons across nine classes, including assault rifles, SMGs, a shotgun, LMGs, marksman rifles, sniper rifles, pistols, a launcher and a melee weapon. Create a Class unlocks at Player Level 4 and supports up to 12 custom loadouts. Weekend Two raised the level cap to 30, opening additional weapons, equipment, perks and streak rewards.

Our MW4 weapons database records the published roster and links the M4 to the evidence available for its beta stats, attachments and field build. A screenshot can prove what appeared in that build at that moment; it cannot prove that one setup is universally best. Loadout pages therefore explain the evidence and tradeoffs instead of inventing a final meta.

Apex Attachments and Gunsmith

Supported weapons can unlock an Apex Attachment after their weapon progression is completed. These upgrades can change a weapon's role or behavior without consuming a standard attachment slot. The SZ GEN.6 PEQ record and M4 field build show how this database connects an attachment screen to a complete loadout while preserving the limitations of the original capture.

CHANGE CONTROL

Latest MW4 Beta Patch Notes

Infinity Ward published daily Early Access Beta updates covering weapon damage, time-to-kill, attachments, maps, playlists, audio, spawns and bug fixes. The August 31 entry is the final major documented weapon-tuning pass, while the September 1 record summarizes developer priorities heading toward launch; earlier August entries remain available as historical records.

Our MW4 patch notes ledger summarizes material changes and points readers to the complete official record. It does not reproduce the entire publisher log or silently overwrite old beta screenshots. When a patch changes a value shown elsewhere, the affected guide should be rechecked and dated.

LAUNCH READINESS

Launch verification begins October 23, 2026

Modern Warfare 4 launches October 23, 2026. Beta values remain dated pre-release evidence; this database will recheck weapons, maps, modes, settings and progression against the retail build after launch.

EVIDENCE POLICY

How MW4 Online Verifies Game Data

MW4 Online uses four practical evidence levels. Official facts come from Call of Duty, Activision, Infinity Ward or an official platform listing. Gameplay Screenshot means a supplied capture visibly supports the claim. Creator Testing describes a public observation that may depend on the tested build. Not Confirmed means the information is held back until a traceable source exists.

This distinction matters during a beta. An official roster can confirm that a weapon or map exists, while a screenshot may confirm a menu value or attachment combination. Neither one automatically proves a permanent launch statistic, the best competitive strategy or a hidden mechanic. Pages show their review date so readers can decide how current the evidence is.