Northrop Grumman begins full-rate Mk44 Bushmaster gun production for U.S. Marine Corps ACV programme

Northrop Grumman enhances USMC amphibious combat vehicles with Bushmaster Chain Guns

MESA, Ariz. – Dec. 16, 2025 – Northrop Grumman Corporation (NYSE: NOC) has entered full-rate production to deliver Mk44 Stretch Bushmaster® Chain Guns® for the U.S. Marine Corps’ new Amphibious Combat Vehicles (ACVs). The Mk44S will be integrated into the Kongsberg remote turret used on the Amphibious Combat Vehicle 30mm program (ACV-30), significantly improving firepower for the Marines. The Mk44S offers enhanced range, reliability and overmat…

Northrop Grumman begins full-rate Mk44 Bushmaster gun production for U.S. Marine Corps ACV programme

The Mk44S provides extended range, improved reliability and overmatch, and can fire all NATO-standard 30x173mm ammunition, including Northrop Grumman’s advanced rounds. It can also be upgraded from 30mm to 40mm by changing the barrel and selected components, offering future flexibility for the platform. Production of the Mk44S is underway at Northrop Grumman’s facility in Mesa, Arizona. Dave Fine, vice president of armament systems at Northrop G…