CZ Custom CZ 75 B Extended Firing Pin w/Reduced Power Spring One Size. For CZ guns with firing pins held in by the cross pin (O.A.L. 2.475in). Use in combination with CZ 2075 Factory Firing Pin Spring. For even better results on hard primers. Specifications for CZ Custom CZ 75 B Extended Firing Pin w/Reduced Power Spring: Manufacturer: CZ Custom Gun Model: CZ 75 B Gun Make: CZ Gun Type: Pistol Package Contents: CZ Custom CZ 75 B Extended Firing Pin w/Reduced Power Spring What firearm models does the manufacturer say CZ Custom CZ 75 B Extended Firing Pin w/Reduced Power Spring is compatible with? The manufacturer suggests that CZ Custom CZ 75 B Extended Firing Pin w/Reduced Power Spring is compatible with CZ 75 BCZ Custom 10105/10458: CZ 75 B Extended Firing Pin w/Reduced Power Spring One Size