I polished my sear (w/o disassembling the sear) and the result was amazing!!! This coupled with the spring mods, my CZ's trigger pull and break is now the best among my (little) collection.
What I did:
- Got a 400 grit sandpaper and (crazy) glued it to a thin and stiff backing (I used a piece of plastic packaging).
- Cut a strip just as wide as the hammer.
- Do the basic pistol dis-assembly (just to remove the slide)
- Locked the hammer all the way back with a rubber band around it and the beaver tail.
- Insert the sandpaper strip between the sear and hammer and started dry firing (w/o the hammer falling). You might have to adjust the rubber band tension to create a little pressure between the sandpaper and the sear.
- Turn the sandpaper and wiggle it a bit to polish the hammer contact area with the sear as well.
- Clean the area properly to remove any grits (wipe, blow, spray and oil)
IMPORTANT: I did not change the sear profile (well maybe a tiny bit ), just polished it.
Question...the hammer has 2 legs that contacts the sear (left and right side). On mine, the left leg is actually shorter and only the right leg is in contact with the sear. Is this normal and intentionally done to reduce friction...or is this a defect?