This Z Custom Shop Ghost Hammer offers the same improved performance as the CZ Competition hammer for improved single action release. This hammer will fit most models DA / SA CZ Pistols. Also used for SA only guns. When used with SA only guns, do NOT use the DA parts. Greatly reduces sear creep, lightens and smooths the single action trigger. Use in conjunction with light main spring (13lb) for smoother lighter DA trigger pull. We suggest that the hammer be fitted by a competent gunsmith. The safety or sear may need to be fitted after installation of the hammer. Hammer is designed for safety model CZ pistols. Can be modified to work with decocker pistol. Important Note on Hammer Width. Standard CZ 75 Slides have a slide hammer notch width of 0.28" using a hammer width of 0.234". CZ 75 SP01 Shadow, Tactical Sport, and CZ 75 Shadow have a slide hammer notch width of 0.355" using a hammer width of 0.315". Check your slide notch width before ordering.