How do Aftermarket Parts work in Modern Warfare 3?

Change is a good thing.
How Do Aftermarket Parts Work In Modern Warfare 3 Featured Image(1)
Screenshot: Activision

Modern Warfare 3 has a ton of features to keep you engaged. If it didn’t, the household name would be relatively hard to sell. To make things fresh and fun, you spend time in the overhauled Gunsmith for Modern Warfare 3. This is where you can change your weapons by obtaining Aftermarket Parts. These Aftermarket Parts are new to Modern Warfare 3, and this guide will explain how they work. 

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Modern Warfare 3: How do Aftermarket Parts work?

Aftermarket Parts are different from getting new attachments for your weapon. Once you level up a weapon fully, you’ll get access to Conversion Kits. So if there’s a gun you like using and have gotten accustomed to, you add life by changing how it works. For example, if you have a Rival-9 pistol, you could make it into a fully automatic SMG with Aftermarket Parts. 

You’ll still be able to upgrade the weapon and get all the attachments. The attachments you unlock will be tailored to how the gun behaves after you’ve used a Conversion Kit. But depending on what weapon you have, you’ll start to earn Aftermarket Parts past a certain point. Unlike attachments, which are earned based on leveling up and gaining XP, Aftermarket Parts follow a different method. You’ll need to do certain challenges like play the Zombie Mode in Modern Warfare 3 to unlock Conversion Kits. 

Modern Warfare 3 Conversion Kit
Screenshot: Activision

Note: You won’t be able to do the challenges until you’ve maxed out weapons that are a part of the Aftermarket Parts program

The reason behind Aftermarket Parts

According to Sledgehammer Games, it’s a way to get new experiences with the same gun. You can find new ways to play and that can be done by using Aftermarket Parts. Instead of getting a whole new gun, you can invest in one that’s working for you, and then by the end, it’ll be something vastly different. Then, when more Conversion Kits get unlocked, you can take things even further. 

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Raza Malik
Raza is a Contributing Writer who's been at PC Invasion since March 2023. After he earned his Media Arts degree at Niagara College, he went on to grow his portfolio by working at such publications as GameRant. While he plays a wide array of different types of games, Raza enjoys discussing open-world games, shooters, and live service games. Some of his favorite series include Assassin's Creed, God of War, and the Diablo series. On the side, he enjoys editing videos, and creating content for his side project Marching Into Madness.