Some popular upgrades to cure reliability issues.
Factory firing pin spring for CZ 2075 Rami
Wolff extra power (+25%) extractor spring for all 75 B Series models
CGW Reduced weight hammer spring kit.
CZ Custom spring and follower kit for increased capacity
Reduced weight firing pin spring for CZ75 series.
+10% extra power magazine spring for 17 / 19 round Mec Gar magazines for SP-01 Shadow and Shadow 2