How to Unlock Second Insured Slot in Warzone DMZ

Today Infinity Ward officially announced that they will not be resetting the weapons insured slots

I unlocked the second insured gun slot in DMZ within the first month of DMZ being available Now, it's telling me the second insured gun

dmz second insured slot weapon slots in season 4 dmz This season you will need to complete black mous reputation

dmz insured slot 2 Today Infinity Ward officially announced that they will not be resetting the weapons insured slots