U.S. Army Evaluates Hanwha K9 Howitzer Bid to Replace ERCA with Alabama Production Plan.

Hanwha Defense USA has entered the U.S. Army’s Mobile Tactical Cannon competition with a K9-based 155mm tracked howitzer designed for rapid deployment.

From Arlington, Virginia, Hanwha confirmed it will offer a U.S.-localized K9 Mobile Howitzer (K9MH) aligned with Army requirements for mature, producible systems. The proposal emphasizes long-range fires, automated reload capability, and domestic manufacturing, including planned production in Alabama. The Army is expected to evaluate prototypes by 2026, conduct soldier testing in 2027, and select a final system later that year.

Read also: Romania's first K9 Thunder howitzer exits production line in South Korea for NATO artillery upgrade.

Hanwha Defense USA is pitching its K9-based 155mm Mobile Tactical Cannon to the U.S. Army as a fast-fielding, high-mobility artillery solution combining long-range firepower, rapid reload capability, and expanded U.S. industrial production (Picture source: Korea Defense Blog).

In its official statement from Arlington, Virginia, Hanwha said the K9MH would respond to the Army’s Request for Prototype Proposal for Mobile Tactical Cannon, while the Army’s own contracting language frames the effort around mature, available systems suitable for prototype manufacturing, network integration, ammunition compatibility, and soldier evaluation.

After canceling the Extended Range Cannon Artillery (ERCA) effort, the Army shifted from engineering a bespoke 58-caliber Paladin derivative to evaluating fielded foreign and domestic systems that can close range, mobility, and survivability gaps more quickly. The service wants a mobile, long-range cannon able not only to shoot farther, but to shoot, move, shoot again, and be reloaded on the battlefield; Army budget documents point to a 2026 competitive evaluation, 2027 soldier experimentation, and a final downselect in late 2027.

The K9 family is a serious entrant because its core armament already matches much of what the Army says it wants. Hanwha’s U.S. material describes the K9A1 as a NATO-interoperable 155mm/52-caliber system with 40 km-plus range, a burst of three rounds in less than 15 seconds, and a maximum firing rate of 6 to 8 rounds per minute. Hanwha has also stated the system has demonstrated 50 km-plus reach with extended projectiles, while company literature lists a 48-round onboard load.

The more important point is growth margin: Hanwha has not yet published a detailed K9MH configuration sheet, but its recent U.S. messaging strongly suggests that the bid draws on the K9 family’s upgrade path rather than a clean-sheet redesign. The company has already secured a CRADA with DEVCOM Armaments Center to integrate a U.S.-designed 58-caliber cannon onto K9-family vehicles, and Hanwha says the chassis and turret have the size, weight, and power margin for that tube as well as future autonomous software integration. That gives the offer tactical relevance now and technical headroom later.

Just as important as the gun is the firing cycle around it. The Army’s Mobile Tactical Cannon work has elevated reload speed and battlefield resupply because the service wants artillery that can survive the first engagement and remain lethal in the second. Hanwha’s answer is its automated ecosystem: a K10 ammunition resupply vehicle that carries two K9 turret loads and can fully reload a K9 in about 18 minutes, plus a JBMoU-compliant modular charge system for 39- and 52-caliber guns optimized for rapid firing with minimal residue.

Operationally, that combination gives the K9MH more than range. In practical terms, a tracked howitzer paired with automated ammunition transfer suits the Army’s renewed emphasis on systems that can fire, move, fire again, and be resupplied under modern counterbattery pressure. Faster burst fire, digital fire control, reduced crew exposure during reload, and a pathway toward higher automation all translate into more rounds delivered inside tighter windows. For armored brigade combat teams or forces operating off-road in broken terrain, that matters more than brochure range alone.

There is also a coalition warfare angle that the Army cannot ignore. Hanwha says more than 2,500 K9-family systems are in manufacture or operation overall, the tracked variant is fielded by over 10 allied countries, and six NATO members have bought the system. That does not automatically make K9MH the best U.S. choice, but it would give the Army an artillery ecosystem with existing user communities, logistics experience, and ammunition commonality rather than a near-zero installed base.

For the U.S. defense industry, the stakes go well beyond one howitzer competition. Hanwha is proposing initial production in Alabama and tying the bid to a wider American industrial footprint that now includes a planned $1.3 billion munitions investment at Pine Bluff Arsenal in Arkansas, where the Army says the company intends to manufacture key ingredients for explosives and propellants and create about 200 skilled jobs. If the K9MH wins, it would validate a new model in which a foreign-origin platform enters the U.S. market not as an import, but as a localized artillery-and-munitions enterprise. That would challenge incumbents on speed, automation, manufacturing depth and cost, not just on ballistic performance.

It would also sharpen competition across the field. BAE Systems is returning with Archer and still discusses a Paladin Integrated Management-based 52-caliber option; Elbit is offering Sigma from South Carolina; Rheinmetall and General Dynamics are backing highly automated 155mm solutions. The broader debate connects directly to M109A7 Paladin modernization, ERCA’s collapse and replacement path, and the U.S. 155mm production surge. The real issue is no longer simply tube length. It is whether industry can deliver a complete fires architecture, gun, loader, resupply chain, charges, software, and production capacity, before the Army’s artillery gap becomes strategic.