Was shooting my Kadet kit for the first time this weekend and while shooting, unbeknownst to me, the firing pin block fell out of the rear of the slide. Either on that round or the next one the firing pin came back and hit me in the chest (didn't hurt at all). I was un-able to find the FPB at the range. I called CZ-USA this morning and spoke with Neil and he is sending me a new FPB free of charge. Yet another reason to love CZ