For an SP-01, the advice I was given from CS at CZ-USA, was that I could order the 1610 version form them directly or find them in the market. However, the new 1612 version was being shipped to their preferred dealers for now and later on they will be available directly or more generally on the market. That transition to generally available isn?t expected to happen till the 4th quarter or so.
As a result, I got mine from Ghost. You do have to dig a little to find the 1612 version. Many folks you get on the phone don?t even realize there is a difference between the 1610 and the 1612, but I find the differences to be significant.
When I get home, I will plan for an break in and accuracy test of the 1612 to determine if it runs as good as the 1610 versions.