Activision & Infinity Ward released a Quartermaster Update on February 28, 2017 that allows players to exchange their Keys for a chance to get new Personalization Items, and Weapons...
PG-13 Trailer:
View: https://www.youtube.com/watch?v=SQ8or0sJnqc
Mature (17+) Trailer:
View: https://www.youtube.com/watch?v=-8gfmdETfIM
PG-13 Trailer:
Mature (17+) Trailer: