The Decocker has the worst trigger of them all. Cajun Gun Works and The CZ Custom Shop both offer products and services for the triggers. I sold my BD...…. the SA has a much better trigger. If I recall..... the B models can easily be converted to SA.
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Except for some trivial differences in the BD hammer hooks (one is removed to make room for the decocker linkage), the triggers and hammer parts are the same for the decocker models and the safety models. Even the SA models have the same parts -- with the disconnector removed. (They offer a different trigger on the SA model, that has adjustments for over-travel and take up.)
There's not TYPICALLY a big difference in the triggers between the decocker guns and the safety-models. If you find a decocker with a bad trigger, it's just the factory "luck of the draw" biting you on the butt -- the same thing could have happened with a safety-equipped model. Most user feel you have to put 300-400 rounds through a CZ before the trigger finally settles in. I never had the patience for that, and when I bought one new, had a local gunsmith do a trigger job (which is can be similar to artificially accelerating break-in wear.) Some action jobs are much more comprehensive.
Parts from Cajun Gun Works (or the CZ Custom Shop) can usually be home-gunsmith-installed without a lot of problems, but the decocker models are a bit harder to work with.
You can do it yourself using CGW or CZC parts, have a local gunsmith do it for you (if you have one you trust), or bite the bullet and send it to Cajun Gun Works or the Custom Shop and have them install a trigger kit and a competition hammer, and you'll never complain about a CZ trigger again. Just replacing the hammer alone, and installing a slightly lighter hammer spring typically ends nearly all complaints -- and both of those jobs are pretty easy.