Yes they are!. My daughter has the first one I bought before they were banned, it was my carry weapon and it's older than my daughter (she's 24). It still shoots as well as the first day I bought it. I have now 3 other Pre-Ban's and not a lick of trouble from any of them.
And while I'm here, I would like to take a moment to say Welcome to our Forum! we like to think of this place and members as family, so never not ask a question about CZ, DW's or Brno's no matter if you think it may be silly or you will get raged on for asking. We really don't do that here and anyone that is rude gets one warning and then a time out and or banned. The only stupid question is the one you don't ask. And that's pretty much the Forum's motto.
So on behalf of the members here and myself here in beautiful Downtown Florida, Welcome!