Bought a used cw9 4 days ago, it was made 4/11. Shot it this morning, about 95 rounds, 50 Blazer, 20 Cor-Bon, 25 Fiocchi. Upon inspecting the empty brass, all exhibited firing pin drag tails. That mark on the primer hit that tails off indicating the firing pin has not retracted when the breach begins to open and the barrel drops. I guessing I'm missing a small spring that returns the striker back. Anybody else seen this?
Second, Fiocchi brass, the majority of them were split! 1/2 - 3/4 of the case length. None of the Blazer (alum) or Cor-Bon did this. Upon comparison, unfired shells (3 brands), all fit very loose in the cw9 chamber. I hauled out a S&W 59 for comparison, that fit was much tighter, albeit, perfect. Is this a design trait to allow for more reliable feeding? Anybody looked at theirs?
Functioning is spite of these issues was good, only one FTC, quickly fed by "burping" the slide.