Slide over to rimfirecentral.com and inquire about the Brooks trigger kit for your CZ452.

Have in my CZ 452 Varmint in .17HMR- BIG DIFFERENCE. Other than that a box stock A1 shooter. My prairie dog rimfire rifle..mine does best w/Hornady 17 gr VMAX.

I think Mr. Brooks may have had some product delivery issues possibly related to health but if he is up and at them, buy his reasonably priced kit.

Regards, Unk "Remember the men from whom you are sprung"