Modern Warfare 3 Gunsmith Aftermarket Parts explained

With the launch of Modern Warfare 3, Activision has introduced a new feature called Aftermarket Parts to the Gunsmith, which allows players to customize their weapons in new ways. These parts can be unlocked by completing unique challenges, and you can attach them to a weapon to change its fire rate, damage, and more.

How does the Gunsmith Aftermarket Parts system work in Modern Warfare 3?

In Modern Warfare 3, the Gunsmith functions similarly to Modern Warfare II, where players can use weapon XP to unlock attachments for a specific weapon and its associated weapons platform. However, for certain weapons that reach max level, players will be able to transform their design using Aftermarket Parts. At launch, Modern Warfare III will feature several sets of Aftermarket Parts, which take the form of conversion kits.

To access these kits, players need to complete in-game challenges that become available once the supported weapon obtains the maximum level. Once the final challenge is completed, the conversion kit is unlocked, serving as the final reward for finishing a weapon's progression path.

All Aftermarket parts conversion kits in Modern Warfare 3

Here are three conversion kits that players can use in Modern Warfare 3:

Pulemyot LMG

Unlock Challenge at max level: Get 25 Kills while hip firing or using Tac-Stance.

This belt-fed machine gun is transformed with the Bullpup Conversion Kit, which greatly increases the weapon's mobility, handling, rate of fire, and recoil. You can also add some Aftermarket Parts in the form of recoil pads for greater accuracy, as well as the Aftermarket Bullpup Barrel to improve bullet velocity and damage range.

Renetti Handgun with Full-Auto Carbine

Unlock Challenge at nax level: Get 30 Kills with five attachments equipped.

This conversion kit transforms the burst-fire Renetti into a full-auto handgun reminiscent of an SMG using 3D-printed parts. After using the kit, the weapon gains increased bullet velocity, range, and rate of fire at the cost of some mobility and recoil control.

The conversion also supports Tactical Stance, unavailable with the base model. You can also pair it with a larger magazine to minimize reloads and add a barrel to further extend your damage range.

Related: Best Assault Rifles in Warzone 2 Season 5

WSP Swarmwith Akimbo Brace Stocks

Unlock Challenge at max level: Unlock via weekly challenge in the preseason.

This kit supports the weapon's frame, allowing Operators to place one WSP Swarm in each hand for an aggressive akimbo stance. As a result, it sacrifices some damage range and mobility to overcome your opponents with a rain of fire.

You can also pair the Akimbo Conversion Kit with a laser that improves hip-fire accuracy for aggressive stealth play. Finally, you can equip a suppressor with hollow point ammunition to stagger enemies without giving up your position.

Related: Best SMGs in Warzone 2 (Current Season)

Other Gunsmith Enhancements in MW3

• In Modern Warfare 3, new weapon attachments will no longer require players to use a specific weapon after they've already been unlocked for another one. For example, suppose the Assault Stock attachment is available for both the AMR9 SMG and the Riveter Shotgun, and the AMR9 has already progressed to Level 8 or higher. In that case, the Stock will be available on the Riveter immediately, and vice versa.
• x1 Optic attachments will no longer slow down your Operator’s ADS speed.

Stay tuned to Pro Game Guides for more Call of Duty: Modern Warfare 2 and Warzone 2 content. In the meantime, head over to our article on Top 5 Meta Loadouts in Warzone 2 Season 5.