The U.S. 155 mm production ramp missed its target at the shell-body stage

The U.S. Army was producing 36,000 complete 155 mm artillery rounds per month in March 2026. Its target was 100,000 by October 2025. The 9 July Inspector General report records real growth from the 14,000-round baseline of 2022, but also a shortfall large enough that the Army cannot yet supply ammunition at the rate its own industrial plan demanded.

The constraint begins with the shell body. A complete round moves through two main stages: a metal-parts plant forms the projectile body, then a load, assemble, and pack facility fills it with explosive and prepares it for shipment. The Army's existing plants were making 46,000 bodies per month in March: 15,000 at Scranton, 21,000 at Wilkes-Barre, and 10,000 at Ingersoll, Canada. Final-round capacity was lower, at 36,000, but the Army expects new filling and assembly capacity to reach 140,000 per month by December 2027. Metal bodies are therefore the longer-term limit.

The missing line is the Universal Artillery Projectile Lines facility in Mesquite, Texas. The Army spent $469 million on the General Dynamics Ordnance and Tactical Systems plant from December 2022 through December 2025 and planned three lines producing 10,000 bodies each per month. As of March 2026, none had produced a body meeting the contract specifications.

Army programme officials accepted what they called a high-risk, high-reward approach. Rather than wait for new equipment, the contractor bought machinery intended for the older M107 projectile and tried to adapt it to produce the newer M795 body. The plant missed initial milestones within seven months of the first task order. Contracting officers escalated from schedule inquiries to a show-cause letter and, in August 2025, a stop-work order on two of the three lines.

The recovery plan remains less mature than the production goal. The Army told the Inspector General that Mesquite would eventually supply 20,000 bodies per month and new National Technology and Industrial Base sources would add another 9,000 by December 2028. The Inspector General left that recommendation unresolved because the response did not show how or when Mesquite would begin compliant production at the proposed rate.

The next checks arrive before 2028. The Inspector General requested an Army response by 7 August, and the three existing plants are meant to reach a combined 71,000 bodies per month by September. That response and the production figures — followed by the first verified compliant M795 body from Mesquite — will show whether the ramp has a recovery path or only a revised target.