GM hasn't mass-produced weapons since World War II - until the Pentagon stepped in this week.
The automaker announced a partnership with Lockheed Martin on Tuesday to scale munitions manufacturing, with the U.S. Department of Defense brokering the deal itself.
The deal didn't start in a boardroom - it started at the Department of Defense.
GM Defense's VP of strategy Bruce Brown confirmed the DoD set up the partnership, which Lockheed COO Frank St. John said will focus on scaling production, strengthening supply chains, and applying advanced manufacturing.
The two companies are working under a memorandum of understanding - a non-binding agreement that signals intent before a formal contract - so no signed deals or firm projects are named yet.
Behind the MOU is real money: Lockheed is putting $9 billion through 2030 into modernizing 20 of its facilities and supply bases, while GM is spending $7 billion on U.S. research and development.
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U.S. defense stockpiles have fallen after years of supporting Ukraine, and the recent war with Iran drained them faster than the defense industry could refill them.
That's the gap the Pentagon is trying to close, and Lockheed alone can't close it fast enough.
So the DoD is doing something it hasn't done at this scale in decades - pulling commercial manufacturers into the defense industrial base.
GM is the first, and Ford may not be far behind.
The White House has already held discussions with both automakers about supporting defense production, fitting Trump's year-long push for more American manufacturing.
GM built tanks during World War II before stepping back from defense work, then reestablished its modern defense arm in 2017 - now one of the company's faster-growing segments.
Current customers include the U.S. Army, Secret Service, and NASA.
A munitions partnership with Lockheed is a step up from that kind of work, putting GM into the part of the defense industry that's currently the most strained.
The MOU stage means there's no project, timeline, or dollar figure attached to specific work yet.
Watch what they actually agree to build, and watch Ford - if the Pentagon is brokering deals like this, GM probably isn't the last name on the list.
The country's munitions capacity just gained a carmaker.
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