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Progression Guide: How Weapon and Attachment Progression Works – Call of Duty: Modern Warfare 2 Wiki Guide

Learning from previous installments in the series, Call of Duty: Modern Warfare 2’s progression system has received a significant overhaul that changes how attachments are unlocked between weapons, as well as how which weapons of each class are unlocked. This progression guide will tell you everything you need to know about weapon progression and attachment work in Call of Duty: MW2.

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How Gunsmith and Weapon Progression Works in Modern Warfare 2

Following criticism from previous episodes of the series, the Armorer has received a major update in Call of Duty: Modern Warfare 2 that essentially revamps the original Loadout crafting tool from Modern Warfare (2019). Infinity Ward’s goal for the revamp was to create a much more exploratory weapon builder that reduces repetitiveness while making reasonable challenges to unlock attachments and camouflage.

And they did, because a whole new mechanic called Weapon Platforms was introduced, and it fundamentally changes the way weapon progression now works in the game. That said, here’s everything you need to know about weapon platforms, as well as updated details about how attachments are now unlocked.

Weapon Platforms Explained

Weapon Rigs are best described as a collection of up to five weapons within the same manufacturer that share a pool of attachments. This is designed to help streamline progression and customization so you can seamlessly switch between multiple playstyles on certain weapons.


So if your weapon is part of a larger weapon rig, you will be able to upgrade a weapon so you can change its receiver attachment through the gunsmith. When you change a weapon’s receiver, you’re essentially changing its class, making it a whole new weapon.

The M4, one of the first weapons you’ll unlock, has four potential receivers you can unlock; these include the M16, 556 Icarus LMG, FTac Recon Rifle, and FSS Hurricane SMG.

To unlock each receiver, you will need to level up each weapon. For example, the FTac Recon Receiver becomes available after upgrading the M4 to level 14. Additionally, you can keep an eye on your weapon deck progress by checking the Progress menu when building weapons. ‘a weapon. Here, you’ll find a progress tab that displays a branching map of your overall rig mastery, as well as the ability to see the progress track and rewards for upgrading each weapon in the rig. weapons.

Weapon Attachments Explained

In addition to weapon platforms, the way attachments unlock has also changed significantly, as they are now split into two categories: Universal Attachments and Weapon Platform Specific Attachments.

Using an assault rifle as an example, here is a breakdown of each category and the attachments included in each:


Specific weapon platform AttachmentsThese attachments can be shared between all the receivers of the platform:

  • Recipient
  • Barrel
  • Magazine
  • Store
  • Rear handle

Universal accessories – If compatible, these accessories can be used on all weapons in the game:

  • Muzzle
  • under the barrel
  • Ammunition
  • Laser
  • Optical

So, as you can see, gone are the days of having to grind multiple weapons to unlock your favorite optic or attachment on each. Instead, you’ll only need to unlock the attachment once on the M4 track for it to be available on all other compatible weapons in the game.

Next: How to Level Up Fast in Multiplayer

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