We are on topic, call the people making and installing it to find out the facts.
NO. I will wait for feedback on this forum from CGN'ers using them...thanks.
Things posted on the internet need to be taken with a grain of salt, these people are faceless and not accountable for what they state or claim so why insist on third party claims??
Thanks Dad...I'm real new to this whole "intranetz" place is it true you shouldn't believe everything you read? Where can I find free pictures of Neked ladies? 
Yes I have a CZ 858 I am sending in to them shortly as I have posted more than once. Since these adapters are a new thing you will not find much on them as of yet.
So in other words, you have no personal experience with the product we are discussing. I'll look forward to reading your "third-party" review when you do!