LoneTraveler
Well-Known Member
I bought a CZ457 last fall and adjusted the trigger put scope on. Shot the rifle a little and went squirrel hunting.
The trigger never felt smooth in its release. A couple days ago I thought it was time to check the trigger out. I removed the trigger, When I drove the pin out and looked at the black center section. On one side of the sear was a small shinny spot. No contact with the rest of the sear surface. I drove the Trigger pin out and removed trigger and sear parts.
I removed the little shinny spot and smoothed the top of the trigger sear also. A little smoothing with a 8000 grit water stone. With readjusting all the screws, The trigger is now 2 1/4 lb. that breaks like an ice sickle.
If you are confident and have tools to properly do this, Here is a few suggestions, IF NOT TAKE IT TO A GUNSMITH.
Be sure to have a support plate with proper hole for the trigger housing when removing the trigger pin, I drilled a little of the flange off the pin before I tried to drive it out from right side.
The receiver pin has the smallest E clips I have ever worked with. Any thing magnetic tool will snitch them. Put in pill bottle till reassembly time. Made a short dummy pin to hold the 2 sections for reinstall out of a piece of bamboo shiskabob stick, to hold the sear and trigger housing together till I got it in and punch aligned to put the original pin back in.
Use a little grease in the spring hole on the trigger to hold the spring, till you get it back in the adjustment hole of the housing.
The trigger never felt smooth in its release. A couple days ago I thought it was time to check the trigger out. I removed the trigger, When I drove the pin out and looked at the black center section. On one side of the sear was a small shinny spot. No contact with the rest of the sear surface. I drove the Trigger pin out and removed trigger and sear parts.
I removed the little shinny spot and smoothed the top of the trigger sear also. A little smoothing with a 8000 grit water stone. With readjusting all the screws, The trigger is now 2 1/4 lb. that breaks like an ice sickle.
If you are confident and have tools to properly do this, Here is a few suggestions, IF NOT TAKE IT TO A GUNSMITH.
Be sure to have a support plate with proper hole for the trigger housing when removing the trigger pin, I drilled a little of the flange off the pin before I tried to drive it out from right side.
The receiver pin has the smallest E clips I have ever worked with. Any thing magnetic tool will snitch them. Put in pill bottle till reassembly time. Made a short dummy pin to hold the 2 sections for reinstall out of a piece of bamboo shiskabob stick, to hold the sear and trigger housing together till I got it in and punch aligned to put the original pin back in.
Use a little grease in the spring hole on the trigger to hold the spring, till you get it back in the adjustment hole of the housing.
