This article- quoting the „RIA-Novosti“ news agency - claims that the Russians have captured an intact ATACMS guidance system *. Serial numbers on the system supposedly show that it was supplied from a US Army depot in Alabama.
Seem pretty COTs these days - certainly not modern where the 3 gyros would be laser on a single chip.
But if the Russians want to go down a hole reverse engineering obsolete tech - let them go ahead. Never interfere with the enemy when he's making a mistake......
https://www.caltech.edu/about/news/n...arths-rotation
https://www.mdpi.com/2079-9292/11/15/2451