I have owned a pile of CZ 452/455's and everyone functioned flawlessly, (something i cant say about some much higher priced bolt action rimfires I've owned in the past) Many guy's will profess to the CZ's "tack driving" accuracy well that it is a matter of what your definition of "tack driving" accuracy is, the dozen or so CZ rimfires I have owned were all acceptably accurate but none were My definintion of "tack drivers"........For the money there is no better value in a bolt action rimfire rifle and that is pretty high praise.........Hb