TunnelRat said:
Since you mention CZs specifically I do remember hearing Angus from CZ custom say that the decocker models often had a more noticeable difference after a trigger job as compared to the safety models due to the the more complex mechanism having more interacting surfaces. I could be wrong.
CZs only:
I've shot, but never owned or detail-stripped a decocker CZ.
Decocker trigger jobs are a bit more complex because the decocker mechanism adds more parts that must be handled/removed and reinstalled after the hammer/sear interface is stoned. I haven't done it but those who have like the "safety" models better.
For the same size pistols, the sear, and the springs are the same., and the only big difference in the hammer is that one of the two hammer hooks is removed in the decocker models -- to make room for the decocker mechanism. (As I've said before, I have no experience with the Omega trigger models -- which is a different mechanism.)
The decocker PULL may feel different -- and Angus Hobdell would certainly be far more knowledgeable about that aspect of the decocker guns. (In addition to being a top CZ gunsmith, he's also a top CZ shooter -- as well as being good with 1911s, etc.) The CZ Custom Shop (and Cajun Gun Works) do more than your father's trigger job -- they typically do a full action tune, which includes things like polishing the decocker and firing pin sakety mechanisms, disconnector, any where metal rubs against metal, against the frame, different springs, etc., etc.
Trigger pulls weights for the various CZs are
roughly the same when starting from the same positions
in the same size guns (i.e., full-size vs. fullsize, compact vs. compact) whether fully hammer down, half-cocked, or fully cocked. The decocker models almost never get to fully hammer down at rest unless the owner has been dry-firing. Those models decock to and start from half-cock; that shortens the pull slightly. The trigger shape is different on the compact decocker CZs, so that changes the pull experience, as well.