After more than three decades without a caliber change, the US Navy’s MK 38 weapon system is being reinvented with its fourth-generation upgrade.
The MK 38 MOD 4 swaps the 25mm gun for a 30mm Bushmaster II from Northrop Grumman and integrates air-burst munitions, significantly boosting shipboard firepower.
Upgraded EO/IR targeting systems and a new operator interface modernize the platform, enabling it to counter today’s complex and evolving threat environment with greater precision.





