Weapon Kits are a customization feature released on the 13th December, 2017 in Call of Duty: Modern Warfare Remastered. Weapon Kits change the appearance of a weapon's model or camouflage. Weapon Kits can be used in conjunction with Weapon Camouflages and are restricted to a certain weapon class.
Weapon Kits are available from Supply Drops and come in all qualities except Common. Some weapon kits are only available from completing Bounties. Every weapon class has two or three Weapon Kits available. Weapon Kits have the option of changing the weapon's camouflage (acting as a secondary camouflage), or completely changing the weapon's model.