https://news.usni.org/2022/04/27/u-s-missiles-sent-to-ukrain…
The United States has shipped about a third of its existing arsenal of Stinger anti-air and Javelin anti-armor missiles to Ukraine – systems that are not quickly replaced – two experts on Pentagon buying said Tuesday.
Testifying before the Senate Armed Service Committee, Ellen Lord, who served as the Defense Department’s top acquisition official, said Stingers cannot be replaced “within the next couple of years” because its production line has been shut down. Even simple items, such as diodes, used to regulate voltage for these systems could be difficult to obtain.
“Even with Javelin, we are probably five years” away from replenishing that stock despite its manufacturing line remaining open, she added.
Building up the stockpile of munitions has “usually been the billpayer” in Pentagon spending plans, and the United States is paying that price now, Lord said. She said that billpaying has included not making investments to modernize everything from existing infrastructure to tooling.