GULF OF ADEN (Feb. 28, 2011) An MK-38 25mm gun system is fired during a live-fire exercise aboard the guided-missile destroyer USS Mason (DDG 87). Mason is deployed as part of the Enterprise Carrier Strike Group and assigned to Combined Task Force 151, supporting maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Jeffry A. Willadsen)
The MK38 Mod2 gun system is the same basic M242 Bushmaster 25mm main gun mounted on a Bradley. In this case, it is operated from a powered, stabilized mount, and fired remotely via an electro-optical stabilized sight. It’s just the handy-dandy thing for popping speedboats that are getting too close.