Spring-related issues with CZs are a common subject of internet discussion but NOT, I would argue, a common problem with CZs.
For a brief period, some years ago, CZ delivered some guns with poor-quality trigger springs -- obtained from a sub-contractor. They acknowledgedthe problem and replaced the springs for those who had failures. CZ also later changed their extractor spring, moving to a more powerful model spring. For folks who where having extraction issues (mostly in guns sold before the mid-2000s, that seemed to solve the problem. Removing and cleaning behind the extractor also helped -- but that's a more involved fix.
I've had maybe 25+ CZs over the years, and had extraction problems with only ONE of those guns. I did replace the extractor springs on several, however, going to the extra-power springs offered by Wolff, as insurance. I also busted one firing pin retention roll pin, back when they said don't dry-fire and I didn't believe them. CZ later changed to a doubled-roll pin and still later to a solid one. No more breaks. (I wish they'd continue to use a firing pin stop plate rather than a retention roll pin, as in the pre-B 75s and 85 Combat; I know, I know -- more costly to make.)
CZ's recoil springs, for years, were lighter than stated -- 12 lbs, probably, rather than the stated 14 lbs. But, this was not a performance issue, nor a problem. (A light recoil spring won't generally cause as many problems as a too-heavy spring.) Except for the trigger springs and the upgraded extractor springs, I know of no others spring-related issues. I do know that a lot of folks who don't know how to diagnose performance issues will blame springs for their problems.
I was a senior moderator on the CZ forum for MANY years; during that time our membership grew to many thousand users. Discussion of problems was an everyday event. Bad springs was not a common topic. One thing I noticed, however, among that growing membership was that many new CZ members were first-time semi-auto pistol owners. That level of experience and know-how brings with it a different understanding of semi-auto problems and less experience in dealing with them. An experienced rifle or shotgun enthusiast, or someone good with revolvers is often lost when starting up with semi-autos.
But, then too, I'm surprised, on these type of forums, by how many folks, when they find they have a problem gun, quickly sell the gun rather than get it right. Most don't contact the gun maker; a few take them to local gunsmiths; a few ask on forums like this for help. It's not rocket science.
