Still fighting issues.....

[96superflow]

well I finally got around to trying some other issues. Took the o-ring out, same extracting issues... swapped the extractor/spring with one from a know good 5.56 bcg. was good for a few rounds, then things headed up, and still got the failure to extract. Did switched to one shot at a time and this is what I am looking at from the brass...

PPU Brass


Hornady Brass




What is someone else's opinion on what I am looking at? I feel like it needs some more polishing down close to the neck...