As promised, here is a list of some dimensions of the internal parts, what is common across the spectrum and will cross reference:
S-2 hammer spring wire OD = .042" which equates to a 14 - 14.5 lb. hammer spring
S-2 recoil spring wire OD = .042" which equates to 13#'s
Firing pin spring wire OD - .029" which equates to OEM
Firing pin length = .2.468" which equates to OEM
S-2 Disco down leg center thickness dimension is .125"
This is a comparison of hammer hook heights, from the sear bed to the top of the hammer hooks:
S-2 = .028"
CZC = .025"
CGW = .016"
Everything in the frame is standard CZ Shadow as follows:
Sear, sear spring, sear pin & cage
Trigger, trigger pin & trigger return spring
Hammer, pivot pin, retaining peg, disco & strut
Safety detent & spring
Manual safety is like the Tactical Sport & SP-01 Compact
Manual safety is unique to the S-2 and is the same as the SP-01 Compact
We'll get more info to the forum in the next few days.