Bunker Hill Chain Gun

A Mk 38 25 mm chain gun fires from the Ticonderoga-class guided-missile cruiser USS Bunker Hill (CG 52) during a weapons demonstration for a family day cruise. Bunker Hill hosted more than 180 guests to show them the operational capabilities and life aboard the ship. (U.S. Navy photo by Mahss Communication Specialist Seaman Karolina A. Martinez/Released)

A Mk 38 25 mm chain gun fires from the Ticonderoga-class guided-missile cruiser USS Bunker Hill (CG 52) during a weapons demonstration for a family day cruise. Bunker Hill hosted more than 180 guests to show them the operational capabilities and life aboard the ship. (U.S. Navy photo by Mass Communication Specialist Seaman Karolina A. Martinez/Released)

The Mk 38 is based on the M242 Bushmaster gun used on the Army’s M2 Bradleys.