The Army has pushed Hanwha Defense USA's wheeled howitzer further toward the field, ordering three more Mobile Tactical Cannon-Wheeled (MTC-W) prototypes less than two months after the original award, Defense Daily reported. The order lifts the prototype count to nine and gives the company, a first-time Pentagon prime, a clearer path to a production contract it expects in late 2028. Hanwha also unveiled the vehicle's U.S. designation, XM1776, at the Association of the U.S. Army's annual meeting in Washington on Oct. 12.

Mike Smith, HDUSA's chief operating officer and president of land systems, told reporters the option order was awarded Sept. 24. He declined to disclose its value but said it is "in line with what we would expect." The Army has not published the option exercise, so its dollar value and full scope remain unconfirmed.

How the Nine K9 Mobile Howitzer Prototypes Add Up

The Army selected HDUSA's K9 Mobile Howitzer in August to replace its M777 towed howitzers with a wheeled 155mm self-propelled system. Per Defense Daily, HDUSA received a deal initially worth $100.3 million for six prototypes, with an option for up to 12 more and a potential total of up to $292.9 million.

Shephard described the Sept. 24 order as "the first exercising of an option for a further 12 platforms included in that contract." That leaves nine optional vehicles on the table, matching Interesting Engineering's account that "The US Army has ordered nine prototype XM1776 Mobile Tactical Cannon systems, with an option for nine more".

Smith hinted the option order covered more than vehicles. "And there's some other things in that option that were ordered. So I'm going to hang fire on that one because the Army hasn't published that yet," he said, adding that the service is looking at ways to accelerate MTC because "they're seeing that we can take more on."

Smith noted the MTC-Wheeled award is HDUSA's first prime contract with the Pentagon. The company has said it expects to deliver the first prototype this fall and the sixth within a year of the award.

Why the XM1776 Designation Matters

The naming ceremony gave the Army an American designation for a system built on South Korea's K9 tracked howitzer family. Hanwha says it has fielded more than 2,500 K9 howitzers worldwide. Interesting Engineering reported that the XM1776 still needs evaluation against U.S. military requirements and remains a prototype effort rather than a weapon approved for full-scale production.

"The XM-1776 Mobile Tactical Cannon represents the launch of the U.S. Army's new long-range precision fires modernization effort," Smith said in the company's announcement.

Opelika Plant and the Late-2028 Production Contract

Most prototype manufacturing will happen in South Korea at first, Smith said, while HDUSA moves more work to the United States ahead of production. Hanwha picked Opelika, Ala., in the spring as the site for U.S.-based integration and testing of its K9 mobile howitzer family, signing a three-year lease as part of a planned multi-site Artillery Production Complex.

Smith laid out how the work will shift: "The gun will be broken into five different sub-assemblies, and the truck will eventually be assembled in the United States. So much of that touch labor is going to happen in the U.S. It'll happen just before we get to full rate production, which would be vehicle number 19."

He said the company anticipates a production contract in late 2028 that could cover 24 K9 Mobile Howitzers plus 24 resupply vehicles. "The Army would like to see that rate go up even more if they can ressource it. We can handle it because we have a backstop in Korea. But we're looking to outfit a facility that can support, without question, 48 vehicles a year," Smith said.

The Army has set a "foundational requirement" that "substantial final assembly" occur in the United States, and said proposals with a domestic manufacturing timeline longer than two years "will be considered but will be viewed less favorably." Smith said that assembly "will start happening during those first 18 prototypes, but will substantially occur in full rate production."

HDUSA Eyes the Tracked Howitzer Competition Next

The company also plans to compete for the Army's Mobile Tactical Cannon-Tracked (MTC-T) program. "Are we interested? Absolutely, very interested in that. When you think of artillery as a system, it becomes that much more valuable the more commonality you have between your platforms," Smith said.

Lt. Gen. Frank Lozano, program acquisition executive for fires, said last month the Army plans a "very aggressive" MTC-Tracked effort in the first half of 2027, with competitive prototype selections around February to April and a winner targeted by July, according to Defense Daily. Smith said HDUSA could offer the K9 A1 as the fastest and most cost-effective option, or the K9 A2, which he described as "completely common" with the wheeled vehicle the Army just bought.

What It Means for Contractors

The Army exercised its first MTC-W option less than two months after the initial award, and Smith said the service is looking at ways to accelerate the program. "What the Army cares about the most [is] speed of delivery. They want capability in soldiers' hands quickly," Smith said.

For U.S. suppliers, the domestic assembly requirement creates openings. Interesting Engineering reported that HDUSA plans to meet with more than 70 existing and prospective suppliers to form an Artillery Industrial Base Coalition aimed at localizing the supply chain. Firms that make vehicle components, fire control electronics, or turret sub-assemblies should watch the Opelika ramp-up, since localized touch labor is planned before full-rate production at vehicle 19.

Competitors weighing the MTC-Tracked effort should note that, per Defense Daily, Lozano said the Army wants mature, non-developmental offerings for MTC-T, as it did when it picked Hanwha's K9 Mobile for the wheeled program. HDUSA's pitch on commonality between wheeled and tracked platforms could put pressure on rivals that cannot offer a shared logistics and training base.

Until the Army publishes the option exercise, the dollar value of the Sept. 24 order and the "other things" Smith referenced remain undisclosed.

Sources