Meanwhile, the US Army has delegated authority to 3d-print replacement parts to commanders in the field:

https://breakingdefense.com/2025/09/army-allowing-commanders...

“We’re basically saying, ‘Hey colonel, hey general, you have to make the decision. If a door handle is broken on an ISV, you need to get it into the field. If you think that replacement door handle is sufficient, send it out.’

“A lot of howitzers are down right now for very simple pieces that we could 3D print and have known how to 3D print, and actually have the design files to 3D print, but we haven’t done it,” Driscoll said. “So we, the Army, have kicked off a very aggressive approach to that.”