The service cyber components that feed up to Cyber Command are responsible to man, train and equip their cyber warriors, meaning each service ends up using their own acquisition and service-specific models to do so.
Marine Corps Forces Cyberspace Command does not possess direct acquisition authority and so they have to work through a variety of vectors including other commands within the service to procure both offensive and defensive capabilities.
Keep reading this article at: https://www.fifthdomain.com/dod/marine-corps/2018/02/21/heres-how-the-marines-cyber-warriors-are-procuring-equipment/