Thanks. I need to have the new one cleaned in an ultrasonic cleaner. There's some rust inside, but nothing major. Seems more like WWII Soviet tank grease was used to lubricate it and it was left on a shelf for 8-12 years after. I got most of it off, but I need to see if the barrel is truly pitted inside. Worst case, I'll need to send it to CZC for a barrel and fitting.
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