With Modern Warfare 4 Season 1, scheduled for November 6, 2026 at midnight ET (6:00 a.m. Paris time), Call of Duty: Warzone changes how it handles weapons from older games. A Black Ops 6 weapon can no longer be edited in Gunsmith? Your custom loadouts are gone, or one of your blueprints is locked? It isn't a bug. Activision describes this behavior in its official announcements. This guide explains what changes, what you keep and how to get usable weapons back.
Problem
- A weapon from Modern Warfare II, Modern Warfare III, Black Ops 6 or Black Ops 7 now only appears in a Legacy tab of the Loadout menu.
- Gunsmith no longer lets you edit that weapon or change its attachments.
- Your old custom loadouts no longer exist.
- A blueprint for an older weapon is locked even though you had unlocked or bought it.
- Weapon camos earned in older games no longer show up in Warzone.
- Build sharing and build codes don't work with a Legacy weapon.
- Your player level is back at the start.
These symptoms apply to Season 1 and later. Before November 6, the rules of previous seasons still apply.
What to know before you act
- What Activision announced: in the official Season 1 article, Activision says Modern Warfare 4 weapons provide "the full weapon experience", while all weapons from Modern Warfare II through Black Ops 7 remain accessible in the Legacy tab of the Loadout menu.
- What Legacy weapons no longer support: they are still usable, but they cannot be edited in Gunsmith. They don't support Mastery Camos, Reticle Challenges, Weapon Customization, Cosmetic Gunsmithing, or Build Sharing & Build Codes.
- What replaces them: each Legacy base weapon gets a five-attachment version. Blueprints for Legacy weapons remain available with their existing attachment setups. These versions and blueprints are initially locked: you unlock them with Player XP in the Armory.
- Your old loadouts: Activision states that prior Custom Loadouts are not supported for Legacy weapons and Legacy blueprints.
- Camos: Activision published a correction in its September 24, 2026 article. Unlike the first version of that article, weapon camos from legacy titles are not available in Warzone.
- What you keep: Operators, Operator Skins and Weapon Blueprints from those four games. You also keep Calling Cards, Emblems, Operator Finishing Moves, Emotes, Sprays, Parachutes and Contrails.
- On-screen names may vary: the in-game menus may use slightly different terms from this guide.
Step 1: check whether your weapon is a Legacy weapon
When to use it: always, first.
Suggested solution
- Launch Warzone and open the Loadout menu.
- Check which tab contains the weapon that's causing trouble.
- If it's in the Legacy tab, it's a weapon from an older game (Modern Warfare II through Black Ops 7). The limits described above apply.
- If it's among the Modern Warfare 4 weapons, it should be fully editable in Gunsmith.
Expected result: you know whether the limit comes from the weapon's Legacy status.
When to stop: if a Modern Warfare 4 weapon can't be edited either, this guide doesn't match your case. Note the weapon and the message shown, then describe them in this topic.
Step 2: unlock the five-attachment version or your Legacy blueprint
When to use it: the Legacy weapon or blueprint you want to use is locked.
Suggested solution
- Open the Armory from the Warzone menus.
- Look for the five-attachment version of the Legacy weapon, or for the Legacy blueprint you own.
- Play to earn Player XP: according to Activision, that's what unlocks these versions and blueprints in the Armory.
- Once the item is unlocked, add it to a loadout from the Legacy tab.
Expected result: the weapon's five-attachment version, or your blueprint with its existing attachments, can be selected in a loadout.
When to stop: in these articles, Activision doesn't publish how much XP is needed or the unlock order. If a blueprint you owned doesn't appear in the Armory at all, check step 5 (Activision account) first before reporting the problem.
Step 3: rebuild your custom loadouts
When to use it: your old loadouts are gone, or you can't find your usual setup.
Suggested solution
- If you want to change attachments freely, pick a Modern Warfare 4 weapon: it is fully editable in Gunsmith.
- If you want to keep an older weapon, use its five-attachment version or one of your Legacy blueprints (step 2). Their attachments are fixed.
- Then rebuild your loadouts one by one in the Loadout menu.
Expected result: you have complete loadouts to play with again.
Rollback: Activision doesn't offer a way back to the old loadouts. You can replace the weapon in a loadout with another one at any time.
When to stop: build codes don't work with Legacy weapons. Don't waste time importing codes for those weapons.
Step 4: understand what happens to your camos and your level
When to use it: your camos are gone, or your player level is back at the start.
Suggested solution
- Camos from older games: according to Activision's correction, they are not available in Warzone from Season 1. It isn't an account problem.
- Mastery Camos: Warzone has its own Mastery Camos for Modern Warfare 4 weapons (Parallax, Damascus Reforged and Empyros, according to the Season 1 announcement). Legacy weapons don't support them.
- Player level: Season 1 resets the Player Level. You can then level up and, if you wish, Prestige across Multiplayer, DMZ and Warzone.
Expected result: you know which changes are planned and which aren't.
When to stop: if your Operators, skins or blueprints are missing, that isn't planned: go to step 5.
Step 5: check your Activision account if content is really missing
When to use it: Operators, skins or blueprints from older games are gone, even though Activision says they remain available.
Suggested solution
- In the game, open Options, the Account tab, then Activision Account (path given by Activision for Modern Warfare 4; labels may vary). Note the Activision ID shown (in the form DisplayName#1234567).
- Compare it with the account you used in previous games.
- According to Activision, your progress doesn't carry over if your PlayStation, Xbox, Battle.net, Steam or Nintendo account is linked to another Activision account.
- To check which accounts are linked, follow the help page Managing your Activision account, section on linking platform accounts.
Expected result: you're playing with the same Activision account as in previous games, and your content is back.
When to stop: Activision only allows unlinking a platform account once every 12 months. Don't unlink anything unless you're sure which account to keep. According to Activision, nothing is lost: relinking the platform to the original account restores your progress and content.
Special cases
| Situation | What to know |
|---|---|
| Other players all appear as Modern Warfare 4 Operators | That's the new Operator Skin Toggle. When it's on, it replaces, for you only, Operators from other games with Modern Warfare 4 Operators. It only changes what you see, not your own Operator. According to Activision, it is off by default: turn it off in the options if you want to see the real skins. |
| You play on PS4 or Xbox One | According to Activision, Warzone will no longer be playable on these consoles from Season 1. Your progression carries over to PS5, Xbox Series X|S or PC if you use the same linked Activision account. |
| The Modern Warfare 4 weapon refuses changes too | That isn't the Legacy weapon limit. Restart the game and make sure it's up to date, then describe the problem in this topic. |
| The game is stuck on "Connecting to online services" | See the guide Call of Duty Warzone on PC stuck on "Connecting to online services" (French guide). |
Final check
- ☐ The weapon is in the Legacy tab of the Loadout menu.
- ☐ The five-attachment version or the Legacy blueprint you want is unlocked in the Armory.
- ☐ Your loadouts have been rebuilt with Modern Warfare 4 weapons or unlocked Legacy versions.
- ☐ The Activision ID shown in the game is the one you used in previous games.
Sources
- Call of Duty: Modern Warfare 4 and Warzone Season 1 announcement (launch date, Legacy tab, unsupported features, five-attachment version, unlocking with Player XP in the Armory, Player Level reset, Mastery Camos)
- Call of Duty: Operator Skin Toggle in Warzone Season 1 (September 24, 2026, with correction: legacy camos not available, prior Custom Loadouts not supported, toggle off by default)
- Call of Duty: Warzone Season 1 overview
- Activision: Modern Warfare 4 in-game account registration (progress stored on the Activision account, Activision ID format)
- Activision: managing your Activision account (linking and unlinking platform accounts, 12-month limit)
Still having the problem?
Reply in this topic with your platform (PC with Steam, Battle.net or Xbox, PS5 or Xbox Series), the name of the weapon or blueprint, the tab where it appears, the game it comes from and the message shown. Never post your email address, password or verification codes. Your full Activision ID isn't needed either.