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I shot the SP 01 yesterday for the first time. I put tru dot sights, a comp spring kit and firing pin. I did some work on the trigger hooks and took the creep out. The gun is very accurate albeit a bit snappy. I shot 14 rounds into 3" at 17 yards .
Most folks will tell you to not touch the hooks on a CZ hammer for safety reasons. Folks in the know warn people to not treat a CZ like a 1911.
The easiest path to an awesome trigger on a CZ is by lighter springs, replacing the hammer with a CZ Custom or CGW comp hammer (these are really nice parts with appropriate hooks and hardening), an adjustable CGW sear (not imperative but a worthy upgrade and it makes fitting a safety child's play), a short reset disconnector from CZC or CGW (a well fit one will dramatically shorten trigger reset even with a fire pin block in place. The Shadows don't have FPBs and I have taken them out of my 97 and my compact) , and some polishing of the trigger bar and a couple other parts. You can find tutorials on the CZ site or Brian Enos. I've done a bunch of different CZs and have been able to obtain an exceptional trigger.