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.
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.