I think I was the only person who got a CZ shadow 2 optic ready version since the announcement of bill c21. And I got it from tesro, which could be the last one imported to Canada.
Not sure if anyone have the similar problem with CZ and what is the solutions. But apart from that, everything works great!
The solution is to buy a Shadow 2 that is not OR (or just the slide) and have Black Box Customs mill it to make it OR.
I've seen a couple Shadow 2s available in the past few days. They're all stupid expensive now more than 50% higher than their release MSRP. Also as an alternative if you're just doing target or competition shooting - the TS2 seems to be more readily available and around $1500-1600.
Williams Arms in Port Perry is showing a couple of CZ75, Shadow 2 on their website.
Closed today, open tomorrow.
Good luck.
http://www.williamsarms.net/newfirearms.html
The optic ready slide is much nicer than having a regular one machined. It's wider and allows for a better fit of optics to the slide. Once an optic is mounted you can just rack off of it. If you don't mount an optic, learn to rack off the front serrations.