One Ukrainian website seem to claim that:
Керована 300-мм ракета 9М949 ракетного комплексу "Торнадо-С": оптоволоконний гіроскоп для інерційної навігації. Виробництво - США.
in google translation:
Guided 300-mm missile 9M949 missile system "Tornado-C": fiber-optic gyroscope for inertial navigation. Production - USA.
They also claim some smaller components on other systems like oscillators etc., which I find more plausible given similar analyses -- see annex in a RUSI report here. But, IIRC gyroscopes are considered more militarily sensitive and aren't that easily exported. (Although Russia might not get them directly from the USA.)
Eh, I see the ultimate source of that claim is actually the same RUSI report, albeit no pictures on that:
The 9M949 guided 300-mm rocket that forms the backbone of Russian precision artillery as a munition for the Tornado-S multiple launch rocket system uses a US-made fibre-optic gyroscope for its inertial navigation. [cited to:] Inspection of a recovered 9M949 gyroscope by the authors during fieldwork in April 2022.
