Hanwha Defense USA partners with U.S. Army on 58-caliber cannon for K9 next-generation howitzer

Hanwha Defense USA disclosed in December 2025 that it has entered into a Cooperative Research and Development Agreement with the U.S. Army’s DEVCOM Armaments Center to evaluate the integration of a 58 caliber 155mm cannon on the K9 155mm self-propelled howitzer platform. According to company statements and U.S. Army development goals, the collaboration aims to accelerate extended-range artillery concepts by leveraging an already fielded, combat-proven chassis, rather than waiting for a clean-sheet replacement for the Paladin fleet. Read full Defense News at this link ...

A K9 Thunder 155mm self-propelled howitzer advances across the training area during a combined live-fire exercise conducted as part of Exercise Talisman Sabre 25. (Picture source: U.S. Department of War)

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