whats the life expectancy of the extractor?

Chui: Nobody else seems to know about the different materials used in some modern extractors. Or they don't find it worth describing.

Thanks for the info from an actual engineering perspective.

100% of the ammo I'm using in two of these newer guns is US-made, simply to test reliability.
The 2,500 rds. of Brown Bear was bought simply as long-term reserve in case of a *Possible* (*note*) future tariff or ban on imported Russian ammo. Stored 7.62x39, very much more.
 
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