CZ Kadet .22 LR Conversion Kit
(CZ SKU# 01612). Fits CZ SP-01 Tactical and CZ Shadow. Fired less than 200 rounds through it. Works on CZ stock pistols with SP-01 stock (from the factory) hammer 20# hammer springs and SP-01 stock firing pins. My SP-01 had custom work done by Cajun Gun Works - 11# hammer spring and custom firing pin which results in light rimfire firing pin strikes. Works perfectly on stock guns with 20# hammer springs.
