MW3 Aftermarket Parts - Modern Warfare 3

Aftermarket Parts (6 at Launch)

The following Aftermarket Parts are available immediately at launch, and each one has a designated unlock challenge. Expect further Aftermarket Parts to become available throughout each Season (including Pre-Season) via the Weekly Challenges system. To apply certain Aftermarket Parts to a weapon, the weapon needs to be at maximum level.

Note: For Aftermarket Parts unlocked via Weekly Challenges, once the challenges expire at the end of the Season, the Aftermarket Part moves into the Armory Challenges section for a new (and always-available) unlock Challenge.

JAK Raven Kit (MCW – AR)

Versatile and modular, this .300 conversion of the MCW can be adapted to hit hard in nearly every combat scenario. This Kit is unlockable in the first weekly challenge post-launch.

JAK Heretic Carbine Kit (MTZ-762 – BR)

This powerful, 7.62 AR was crafted to deliver exceptional damage with moderate recoil.

Broodmother .45 Kit (WSP-9 – SMG)

A high-damage conversion kit that rides the line between SMG and AR with hard-hitting .45 Auto rounds.

JAK Annihilator Bullpup Kit (Pulemyot 762 – LMG)

A modified, bullpup LMG that provides superior maneuverability while still delivering heavy and consistent fire.

XRK IP-V2 Conversion Barrel (COR-45 – Handgun)

This carbine conversion kit for the COR-45 allows for optics and underbarrel attachments. It also introduces binary fire which effectively doubles the fire rate.

JAK Ferocity Carbine Kit (Renetti – Handgun)

This heavy carbine kit converts the Renetti pistol into a compact and maneuverable SMG. Allows for optics, stocks, and underbarrel attachments.

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Aftermarket Parts

A new feature coming to Gunsmith and Loadouts is Aftermarket Parts, which allow players to dramatically alter the function of a weapon beyond the effect of attachments unlocked in the normal course of Gunsmith.

Aftermarket Parts introduce new progression paths for weapon leveling that offer truly unique weapon configurations for enhanced playstyle customization. To access this new feature, players must first obtain a supported weapon’s max level and then complete an in-game challenge to unlock the new gear.

From converting an LMG into a bullpup design for more aggressive play to using 3D-printed parts to transform a Handgun into an SMG, Aftermarket Parts turn everything you know about your most familiar weapons on their head.

Three Aftermarket Weapons

To give you a better idea of the kinds of changes Aftermarket Parts bring to a weapon, here are three Conversion Kit examples, beginning with the bullpup LMG conversion mentioned in the video. The examples shown below also come paired with example attachments to give an idea of how you can further customize your weapon’s lethality in the field in conjunction with Aftermarket Parts.

Aftermarket Parts Loadout #1: Pulemyot LMG

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

Transform this belt-fed machine gun with the Bullpup Conversion Kit, greatly increasing the weapon’s mobility and handling, rate of fire, and recoil off the hip and when in Tac-Stance. What was once a behemoth weapon can now be used to run and gun without giving up the LMG’s deep ammo reserves.

Add some Aftermarket Parts in the form of recoil pads fitted to the Stock for greater accuracy, as well as the Aftermarket Bullpup Barrell for improved bullet velocity and damage range. This provides a solid foundation for aggressive play that can only be further improved through the use of additional attachments.

Aftermarket Parts Loadout #2: Renetti Handgun with Full-Auto Carbine

Unlock Challenge at Max Level: Get 30 Kills with five attachments equipped.

Through use of 3D-printed parts, you can convert the burst-fire Renetti into a full-auto Handgun reminiscent of an SMG. Gain 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, offering greater options in how you approach each fight.

Pair the Conversion Kit with a larger Magazine to minimize reloads and you’ll be firmly in SMG territory. Add a Barrel to further extend your damage range, or focus on hip-firing improvements for fighting at top speed.

Aftermarket Parts Loadout #3: WSP Swarmwith Akimbo Brace Stocks

Unlock Challenge at Max Level: Unlock via weekly challenge in the preseason.

Add additional support to the weapon’s frame, allowing Operators to place one WSP Swarm in each hand for an aggressive Akimbo stance that sacrifices some damage range and mobility for the advantage of overwhelming your opponents with a rain of fire. With dual weapons, you’ll no longer be able to aim down sights, so get up close and make it count.

Complement the Akimbo Conversion Kit with a Laser that improves hip-fire accuracy; for aggressive stealth play, try equipping a Suppressor with the Hollow Point Ammunition to stagger enemies without giving up your position.

Other Gunsmith Enhancements

The new Gunsmith is bringing additional innovations to the overall weapons system. These include more shared attachments and the removal of certain penalties when equipping small Optics.

Attachment Unlocks: For new Modern Warfare III weapons, attachments such as Grips, Barrels, Magazines, and Stocks will no longer require players to use a specific weapon after they’ve already been unlocked for another one. For example, the Assault Stock attachment is available for both the AMR9 SMG (at Level 8) and the Riveter Shotgun (at Level 12). If your AMR9 is already progressed to Level 8 or higher, the Stock will be available on the Riveter immediately, and vice versa.

1x Optic Attachments: As opposed to their counterparts in Call of Duty: Modern Warfare II, new 1x zoom Optic attachments will no longer penalize your Operator’s Aim Down Sights speed, allowing faster target acquisition when using these sights.