General Motors has begun supplying components for Lockheed Martin’s Patriot missile system, marking the automaker’s entry into the missile manufacturing sector amid increased demand for U.S. defense munitions. Lockheed Martin announced Thursday that GM delivered an initial batch of missile housing parts for the PAC-3 Missile Segment Enhancement (MSE) interceptors in August.

The move comes as the Pentagon seeks to significantly boost production of Patriot missiles to replenish stockpiles depleted by ongoing conflicts in Ukraine and the Middle East. With orders to more than triple Patriot output to over 2,000 missiles annually by 2030, Lockheed Martin faces intense pressure on its supply chains, which include numerous subcontractors struggling to expand production rapidly.

Lockheed Martin CEO Jim Taiclet highlighted supply chain constraints as a primary challenge, noting at a recent investor conference that while the company can assemble missiles at scale, shortages of key parts often limit output. Many critical components, such as Boeing’s advanced seeker technology, remain sourced from single suppliers and require time-intensive, often handmade production processes.

GM’s entry as a supplier aims to alleviate some of these bottlenecks by providing a second source for missile housing components. Lockheed Martin praised GM for delivering parts in three weeks, a process that usually takes several months, demonstrating the potential for automakers’ manufacturing capabilities to support defense needs. The new contract complements existing suppliers like General Dynamics, broadening the Patriot program’s production base.

For GM, defense manufacturing represents a growing, though still relatively small, segment of its business. CEO Mary Barra has emphasized the company’s ambitions in military work, anticipating $700 million in defense revenue for 2026 and aiming for double-digit profit margins. GM is reportedly in discussions to supply additional missile components to Lockheed Martin, although specific future projects have not been disclosed.

The automaker’s pivot toward defense production reflects broader industry trends as traditional automotive markets face global challenges. Unlike some competitors, GM has shown particular openness to expanding its role in defense manufacturing, leveraging its expertise in large-scale, precision production to meet military requirements.

The collaboration between GM and Lockheed Martin underscores efforts by the Pentagon to engage a wider range of manufacturers, including those outside traditional defense circles, to help replenish critical munitions supplies amid heightened geopolitical tensions and ongoing military conflicts.