Shmackey....
CZ usa doesnt have other springs for the Compact. Wolf offers 18,20 & 22 lb springs. I have a 20 lb in my gun for all the hotter
ammo I shoot and seems like a good spring weight...the stocker is a 17 lb, but mine seems a little weeker than that.
Wolf also offers a tuning kit, with all of the above specified weights so you can tune your gun for your specific task at hand...
Carry w/ hotter ammo 20 lb, Target with standard...go 18 lb etc...
The whole kit it 17-18 $...good deal!
If your gun has the double spring...its older. My gun was made in 1999 and has the "twisted spring"...Get the Wolf...
Shoot well