Tried out my glock 19 Gen.3, test date was 7/22/2012. Fired 100 rounds of WWB Win. and 20 rounds of Blaser brass 115 grain.
Winchesters worked great, but not the blaser brass, jam after jam. All brass was ejected at my face and head.
No limpwristing here because I had a 17 and a 26 before that without those problems.
The ejector was marked (336) not sure about the extractor.
I wil test it some more before calling glock.