The following is directly from Mike Eagleshield at CZ-USA, as the result of a phone conversation and email question. This information was received by email, today (06/07/2005) My additions/explanations are included in [brackets]:
1. The dovetail is the same on the 85 Combat [and the 75B], save for the milled away portion to the rear. It will accept all 75 sights.
2. The LPA low profile adjustable [i.e., the standard adjustable that comes on the 85 Combat and Kadet Kit] can be fitted to any current 75 by milling away the [the raised rib on the] slide, to the rear of the dovetail.
3. We now offer an LPA high profile adjustable fiber optic sight set(front & rear) that will fit all current 75's for $89.95.
4. We also offer a fiber optic front sight that will replace all current 75 front sights for $29.95. There is no fiber optic rear sight [sold by itself].
5. We currently get our Tritium sights from PT and also Meprolight (when we can get them).
6. The low wedge [Novak-like] rear sight on the PCRs is a factory design and will fit any current 75, with metal [the raised rib] removed forward of the dovetail.
7. All current 75 based pistols will have the same front sight and 6 possible different height rear sights, to correct for elevation.
Note: The earliest 75's also had a narrower rear sight dovetail and rear sights for it are no longer available. The good news is it can always be opened up to take any current 75 rear sight.
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With regard to the parts availability for the the original 75 (pre-b) pistols, Mike wrote:
The original pistol uses the same basic parts as the current 75, save for the safety, safety detent and front sight (stake on).
I currently have run out of original safeties and front sights, but does have the safety detents in stock.
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Mike's statement above was a general one, as weknow, too, of some other differences with hammers, which have varying widths, and firing pins and firing pin springs.
