MW3 Unlock All Attachments - Modern Warfare 3

How to unlock attachments in Modern Warfare 3

Unlocking attachments for weapons works in one of two ways – Universal attachments and Platform-specific attachments.

Let’s go through these one by one:

• Universal attachments are, once unlocked, apply to every weapon in the game, consisting of:
• Muzzle
• Underbarrel
• Ammunition
• Laser
• Optic
• Platform-specific attachments unlock only for weapons within that Platform, consisting of:
• Barrel
• Magazine
• Stock
• Rear Grip

For Universal unlocks, though it will apply to every weapon once available, it still might require a specific unlock path – for example, the M4 has an Optic which requires you to level the .50 GS handgun to level 4 first.

Platform-specific attachments also encourage you to interchangeably use several of its available weapons within that Platform – but are more limited to that platform.

This requirement is shown below an attachment’s name when hovering over it in the weapon customisation screen – you can see this in the image below:

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As a result of the above, many attachments will be locked until you reach the required level with a specific weapon that is most likely not the one you’re using.

Also know that some weapons don’t have access to every type of attachment, and others can have their own bespoke type of attachments – in those cases, the attachments are unlocked by levelling weapons within the same Platform as itself.

How to unlock attachments quickly using Weapon Vaults and Blueprints in Modern Warfare 3

As well as individual attachment unlocks, there are two (albeit specific) ways to unlock things at once through Weapon Vaults and Blueprints.

Weapon Vaults in Modern Warfare 3 immediately unlock an entire Platform’s weapons and attachments, and all share the same aesthetic and theme, similar to Blueprints in previous releases.

At launch, the only available Weapon Vault in Modern Warfare 3 is the FJX Cinder, available to players who own the Vault Edition.

This particular Weapon Vault fully unlocks the M4 Platform and its associated weapons and attachments, all stylised with a black and red theme.

Though no others have been confirmed, signs point towards this potentially being an earnable Battle Pass reward or in-game store purchase.

With a Weapon Vault, Weapon Platform-specific attachments are unlocked for use immediately.

Universal attachments however will remain inaccessible until they are unlocked normally – this will mean levelling the associated weapon to unlock the attachment.

If you own either a Weapon Vault or Blueprint, its themed attachments are available to swap out on every weapon compatible with that attachment via the attachment skins menu, shown in the image below.

Additionally, with a Weapon Vault, there’s no need to level a weapon to access its attachment slots – they’re available right away too.

However, the weapon’s level will remain at the level it was before acquiring a Weapon Vault one – this means for features such as Weapon Tuning, you’ll still have to reach the weapon’s maximum level to have access to it.