Received several more full size and high resolution images. The resized images posted here have much less detail.







I'm with Stan; looks like a primary chamber metal failure. I don't see a ring bulge. The top rib extension screw (and the receiver does have the doll's head slot) appears NOT to involve the barrel as the hole ends superior to the extractor guide rod.
No response to the word I've circulated hoping to evaluate the barrels.


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