Modern Warfare 3 Season 1 Aftermarket Parts: What Are They? How To Get Them?

Modern Warfare 3 Season 1 unveiled the very first layer of its many-to-come content updates in November end. Players were excited to see what's on the cards with this Season 1 update upon launch. Among a plethora of additions, a new set of Aftermarket Parts arrived, further bringing new customization options for players.

The Aftermarket Parts is a new special customization in Modern Warfare’s Gunsmith system, which takes the form of Conversion kits, allowing players to build unique and powerful weapon configurations or types. The new feature lets players come up with builds that focus on their preferred playstyle.

All MW3 Aftermarket Parts in Season 1

Modern Warfare 3 Season 1 is bringing forth nine new Aftermarket Parts. Each is designed to cater to specific weapons or categories. These parts give players the ability to enhance attributes, reform functionality, and even customize the appearance of their chosen weapons.

While some Aftermarket Parts were available at launch, some will become available during the mid-season update. The developer also confirmed earlier about one part being tied to the Battle Pass.

In the blog, Call of Duty confirmed, "Season 1 brings five free new weapons and nine Aftermarket Parts."

Let us take a look at each Aftermarket Part, its features, and the weapons it is compatible with:

1. JAK Purifier

   • This is an underbarrel flamethrower.

   • Compatible With: MTZ-556, Holger 556, DG-56, SVA 545, RAM-7, MTZ-762, BAS-B, Sidewinder, Riveter

2. JAK Ettin Double Barrel Kit

   • It creates a pair of stacked barrels that fire simultaneously, resulting in twice the original damage inflicted.

   • Compatible With: AMR9

3. JAK Thunder LMG Kit

   • It features a high-capacity magazine and progressively increases its firing rate.

   • Compatible With: Sidewinder

4. JAK BRB

   • It minimizes recoil while also notably amplifying the muzzle sound.

   • Compatible With: Many Assault Rifles, Submachine Guns, Battle Rifles, Marksman Rifles, and Sniper Rifles

5. JAK Bullseye

   • It is a compact dot Optic that provides an exceptionally clear and precise sight picture.

   • Compatible With: Most weapon categories

6. JAK Glassless Optic

   • It is a compact reflex optic without glass, which provides a sharp and unobstructed view.

   • Compatible With: Most weapon categories

7. JAK Signal Burst

   • This grants a four-round burst fire.

   • Compatible With: Holger 556

8. JAK Beholder Rifle Kit

   • It turns the Rival-9 into an Assault Rifle with a three-round burst fire.

   • Compatible With: TYR

9. JAK Headhunter Carbine Conversion

   • It turns the Rival-9 into an Assault Rifle with three-round burst fire.

   • Compatible With: Rival-9

How to Get MW3 Season 1 Aftermarket Parts?

Players can obtain the Aftermarket Parts in the game in various ways. These include earning them through the Battle Pass, Armory Unlocks as well as Weekly Challenges.

As of now, players can obtain the Aftermarket Parts by completing the following objectives:

• JAK Purifier: Reach and complete the A14 Sector of the Season 1 Battle Pass

• JAK Headhunter Carbine Conversion: Complete any five Challenges from Week 1

We will make sure to update this list as new Aftermarket Parts are revealed throughout MW3 Season 1.