Getting the right roller is critical for proper system timing and reliable operation. The OEM roller OD size can vary from .212″ to .224″. The question is why? At the Czech factory a variety of rollers are on hand during final assembly which corrects the “fall to disconnector” timing issue inherent in the CZ design.
CGW recommends checking the OEM roller with a dial caliper or micrometer. If the OEM roller measures .212″ – .222″, use the CGW .220″ roller. If your roller measures over .224″, consult CGW tech support.