Russian APCs based on T-62 chassis are appearing in Ukraine.
https://www.forbes.com/sites/davidax...ainian-drones/
I'm beating a dead horse here, but I really think that this sort of ad-hoc vehicle would be fairly commonplace in the T2kU after the nuclear exchanges. Obviously, if the user has the ability to repair or replace an MBT turret, that would be the first option. But without proper parts or repair facilities, the next best option would be a conversion similar to the ones appearing on both sides of the fighting in Ukraine.
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