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