YoDave's CZ 452 , 455, BRNO 2 , BRNO 4 & BRNO 5 - trigger shim and spring kit.

Comes with 4 shimming tubes, 4 springs varying from 1/2lb to 5lb as well as a 3/16 roll pin to replace the old trigger pin that pulls on the sear.

This kit will provide a lighter and more crisp trigger operation. Easy to install.