Since there is no manual for the 01612 kit yet, I asked on the phone at CZC when I received the kit.
So far, it feels like they were correct. I will use a force gage to verify it if it is helpful.
I got away with Aguila Pistol Match, CCI Pistol Match, on one end of the spectrum, and then Fed American Eagle 38gr HiVel on the other end, all with just the regular (black) spring. Only thing obvious with the HiVel was the louder report. Shooting in a lane at the indoor alone, I can?t judge the ejection pattern.
I didn?t get an answer as to when CZ would release documentation for this version. What I wanted to know, aside from the springs, was the recommended cleaning procedure, but I figured that out myself.
The front sight block appears to be polymer (PEEK?), and the pin is a snug fit in the block that keys to a cut under the bbl. Because the block is polymer and the bbl is hard, you should be careful to align the block to the bbl cut carefully before pushing. The pin is radiused on both ends and should forgive small misalignments. A rough alignment guide is to close the slide and breech, then align the block back against the slide. You should be able to insert and remove this pin by hand using a tool or punch. This sigh block removal allows the bbl to be removed from the slide for breech to muzzle cleaning with a rod. I?m sure a daily patchworm pull through is enough most of the time.
I?ll run all three against a force gage to check closed and open forces as soon as I can and report back.
ETA: What they told me seems correct. The blue spring is a lighter gage wire at about 0.032", the red and black are the same at about 0.035"
So, for the longer red spring compared to the black spring, I'm getting roughly 8 - 8.5# Red, versus about 7.75 - 8 # black, followed by the blue at something on the order of 6.5#. So it seems to match what they said for now. Of course the thing is to test with your ammo regardless.
