I also hope this gets resolved fast too! my .40 Shield has a little over 100 rounds through it and a few Winchester Ranger 155's and has been perfect, no bulging brass...all looks good but, now i am kinda concerned to even shoot the thing.
I bought the Shield to replace my Kahr CM9 that also has been 100% but i am concerned about it's long term reliability.
I may have to get the Glock 26 back into CCW.

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Chewy