CZ 858 Gremlin Trigger issue with the latest batch of CZ 858's from Wolverine.

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Gaebz

Gaebz

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Hello everyone,

I bought one of the latest CZ 858s from Wolverine a few months ago and it looks like mine has the gremlin issue.

-Trigger slides on the sear and goes numb, almost feels like on safety, won't fire.
-When I push the pin towards the receiver (The pin next to the safety lever) the sear can catch and the rifle can fire.

After watching this video https://www.youtube.com/watch?v=lEN-mp6sRbI explaining what this problem is, I am pretty convinced it is what I have. I shot about 200-300 rounds through it and it happened today at the range. My CZ 858 feels broken right now I cannot use it anymore unless this is fixed.

My question is : Is there an aftermarket or an easy fix I can BUY rather than make some kind of homemade shim like they show in that video? I'm new to the CZ 858 world and I don't feel like starting to spend hours to understand everything and do everything. I paid 1100$ or something for that rifle, I don't mind paying an extra if there is something out there that can be done quick and easy. (Unless this is included in the warranty?)
 
There was another fix was,it was a welded tab on the bolt carrier. Some VZ58's had this fix.
Takes 15 minutes to put the shin on the sear pin and put a little more tension on the spring. I have not has a FTF since I made the fix and haven't looked back. If you call Wolverine, they will tell you to try the fix. Remember, these are not new rifles, but refurbished to make the CZ858.
Good luck...
 
Did you make the shim with a 9mm case like in the video? Not sure how he makes them. You just use the sear to punch a hole?? Then you cut it with what? A dremel? I live in a appartment and don't really have access to a workshop. I have some basic tools, a grinder, a dremel. How did you make yours?
 
The op statest this issue happened after 200 to 300 rounds.......so basically can this issue happen anytime even after 1000s of rounds? At any given time this can happen?
 
I used a 9mm casing and used side cutters to cut it out. Drilled a small hole in it but hold the brass with a pair of pliers. Also, a nail would work as well as a punch. You then trim it round after you have made the hole. You could go buy a real small washer at Home Depot or Home Hardware.
Is the sear pin really lose? If it isn't, you could just try putting more tension on the spring first. That usually fixes it. Mine has a 85% failure right out of the box, so I had to do the shim.
 
200-300 rounds.. More like 200 after a second thought, not 300. If yours is safe after 1000 it should be safe forever because according to the few researches i have made, it seems like it happens fast. Some parts get loose or something due to normal use and adding a shim fixes the problem because it won't get more loose after that. So if you shot 1000 rounds, the issues should already be there?

So 1000 rounds means yours might be fine. I can't answer the question though, maybe some people with more experience with the CZ 858 will know.

From what I understood, it's like a disease you are born with. You either have it, or you don't and you won't. It's not something they develop randomly after 10,000 rounds. A few hundred rounds is what I read.
 
I had the same issue with mine fresh out of the box. Racked the bolt once, dry fired. Second time, nothing. Dead trigger. Couldn't even get the trigger to engage so I could dry fire it to disassemble. Eventually got it it by racking the bolt hard and letting it slam shut while holding the rifle at different angles lol.

Contacted wolverine and although sending it back was an option, Dave explained the process and it is an easy fix and I wanted to try it myself first.

Two things you can do -

First, theres a little flat spring at the coming up from the bottom rear of the receiver. Hook it with something (I just looped around it with a piece of string) and bend it upwards. This will increase the spring tension on the sear. After this I had a bit better results, actually got the rifle to fire, but the gremlin would reappear after one or two rounds.
IMG_20160428_201050.jpg
So if bending the spring isn't enough, the issue usually is the little bit of play between the sear and the pin that holds it in. Apparently since they were formerly full auto receivers and have a few select parts missing, the space left over causes the problem.

I went to home hardware and found the smallest washer I could find, they actually gave it to me for free from the package since I only needed one, unfortunately I don't have the package with the size. Just bring in the pin and find one that fits. Went home and having minimal tools in my temporary apartment just spent 20 minutes sanding it down with my finger lol

Got it to fit and took it out the next day, haven't had an issue since.

There is a good YouTube video outlining this process. I'll see if I can find it and post a link.
 

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jdx23 Thank you so much for your answer! I hoped a washer from a hardware store would work, did not want to mess around with a 9mm empty casing, punch, sand, meh. If a simple washer and some very minor sanding is all you need, that's awesome!
I'll see if Wolverine has something for me. I love my CZ 858, hopefully I can keep it and the trigger works forever. I was thinking about getting a VZ 58, sell my CZ 858 without wood furniture for a bit cheaper to someone who wants a tactical one or something.
But I'd rather keep my 858, I bought it from Wolverine and it wasn't to sell it.
 
I just finished watching this video. Indeed, this video was very nice. Thank god I can simply use a washer with some sanding. Thanks again, your help is very very appreciated.
 
A piece of copper wire of appropriate gauge works just as well as the brass shim/washer.
Just loop it around the pin in the same place, put a couple twists in to lock it, and snip the excess off.
Tuck in the twist and you're done.

Worked on mine with several hundred rounds through it since the fix.
 
Gaebz said:
jdx23 Thank you so much for your answer! I hoped a washer from a hardware store would work, did not want to mess around with a 9mm empty casing, punch, sand, meh. If a simple washer and some very minor sanding is all you need, that's awesome!
I'll see if Wolverine has something for me. I love my CZ 858, hopefully I can keep it and the trigger works forever. I was thinking about getting a VZ 58, sell my CZ 858 without wood furniture for a bit cheaper to someone who wants a tactical one or something.
But I'd rather keep my 858, I bought it from Wolverine and it wasn't to sell it.
Click to expand...

Lol I wouldn't say it was minor sanding on the washer I used, my finger was smooth by the end of it. But, I had no idea what I was looking for getting into it, I'm sure you can find a more appropriate, slimmer washer :)

Good luck with it!
 
from my experience with my first cz858 , the gremlin would appear but never to me , ended up just to tab myself the bolt carrier , and the cz i got from wolverine during the sale was running perfectly when i tried it , it just a really little problem easy to fix , im pretty sure that somebody could take a 858 versus a csa vz58 and the cz858 will shoot more round before breaking after all it the great deal , most accesssory are made for the 858 and many need fitting for csa vz58
 
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