I have a great shooting CZ but it needs a 2 stage trigger. I have heard that someone makes one but I do not know who or if it is worth fooling with. My trigger has been worked and is a crisp 2lbs. so if I am going to change it I need for the 2 stage to be good quality. Also if it is out there does it require a gunsmith to install?

why do you feel you need a two-stage trigger? I don't want to tell you your business but if it is a crisp single-stage why not just shoot it? Timney makes a drop-in single-stage but I have not heard of a two-stage for the CZ. If you are familiar with the single-stage I would just practice my butt of with it and learn it and spend the money on ammo. Just my .01

Walther marketed a target rifle in the not so distant past that was based on a 452 action, but was sold with a 2 stage trigger. I wonder if that trigger could be purchased as a spare part and installed on a 452.