Puzzling incident with my CZ-858

fat tony

fat tony

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I was shooting my CZ-858 recently, previous to this trip I had not shot it for about 6 months, I noticed quite often, I would chamber a round, shoot one round, and the trigger was not reset :confused: I then would curse, work the action, chamber another round and it would fire, the next one would not reset the trigger. . . :confused:, I would look @ the rounds that did not fire and they had dimples on the primers. :confused: I tried the same ammo in my SKS and they worked just fine. :confused: Both rifles were clean. The only thing that I can think of is that the CZ-858 was a bit dry, however I sprayed in some clp, and it seemed to lessen the problem, although it cropped up again and again. The magazines for this rifle are new and tight, but in good shape. :confused: Any suggestions? :confused:

Edit: I was not limpwristing the rifle, it was tucked in nice and tight.
 
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Yep that's the gremlin
Exact same thing with mine.
You can cure it by either getting the bolt carrier tabbed, or by yanking the trigger back all the way when firing it.
 
if it made contact with the primer then i can only see the ammo as being the issue, the machine functioned properly by hitting the primer which should have then caused the powder to combust. happened to me once with a cz858. must be the ammo.
 
survivalofthefittest said:
if it made contact with the primer then i can only see the ammo as being the issue, the machine functioned properly by hitting the primer which should have then caused the powder to combust. happened to me once with a cz858. must be the ammo.
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No. Every time you chamber a round the firing pin leaves a dimple in the primer, whether you pull the trigger or not.

The OP's post says the trigger did not reset and the ammo worked in a SKS.
 
It's the gremlin. As already suggested, tabbing the bolt carrier will solve the problem, working the trigger more aggresively may reduce the frequency.
 
Dave at Neit Arms tabbed my carrier. Reasonable price and excellent service and quality.

FWIW, I have two 858s. One has never had the gremlin and does not have a tabbed carrier. The other did it very infrequently and mostly when other folks were shooting it. I had that one tabbed and an LH CH installed.
 
I put 80 rds through mine (brand new) on monday without a single malfunction. Does the gremlin sneak up on you over time, or will the rifle do it from new until its fixed?
 
Stevo said:
Dave at Neit Arms tabbed my carrier. Reasonable price and excellent service and quality.

FWIW, I have two 858s. One has never had the gremlin and does not have a tabbed carrier. The other did it very infrequently and mostly when other folks were shooting it. I had that one tabbed and an LH CH installed.
Click to expand...

We recently stopped offering this service. We have been too busy to give an
acceptable turnaround time. Hopefully someone will be able to step up
and pick up the work, we get a lot of requests for this still, we just don't have the time with all the work we've been doing over here.
 
Ahh.. The infamous gremlin that so many Cz858 owners DENY !

Check the trigger group you could have some sideways slop. Pull the trigger left and right and see if it catches, if not, shim the trigger group.
 
westwest said:
shim the trigger group.
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:agree:
Don't know if you can make it out but if you place a washer on the reciever side of the trigger you will able to correct this issue with out the need for tabbing your reciever. Also you will need to use the fatter of the 2 sears from the part's kit in order to properly correct this issue.
IMG00262.jpg

IMG00263.jpg
 
To know if you have the gremlin or not Fat Tony, try this the next time you take it to the range:

Chamber a round and pull the trigger without releasing it until the rifle chambers another round. If it won't fire after you've released it you have the gremlin.

Proper trigger technique seems to manifest this issue in those rifles that have the gremlin.

Also, DLASK will repair the trigger gremlin for you. Give them a call.
 
survivalofthefittest said:
stevo just out of honest curiosity if the firing pin is leaving a dimple in the primer shouldnt the gun go....bang? i didnt think it hit the round twice.
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It doesn't hit it hard enough to set it off. The striker isn't forcing it forward against the primer, either. Many semi-auto rifles do this, including the SKS and the AR.

That's a big reason why you need make sure that in a rifle with a free-floating firing pin, the firing pin is clean and dry and moves freely. A stuck one can cause a slam-fire or out of battery ignition.
 
Satain said:
:agree:
Don't know if you can make it out but if you place a washer on the reciever side of the trigger you will able to correct this issue with out the need for tabbing your reciever. Also you will need to use the fatter of the 2 sears from the part's kit in order to properly correct this issue.
IMG00262.jpg

IMG00263.jpg
Click to expand...

thanks by 'receiver side of the trigger' you probably mean a shim on both sides? - I might try this for myself, but if I ever sell it I probably will have to get a pro job, just in case I get mixed up with a liability case.

Edit: I shimmed a trigger group once myself, except it was for a Crosman 1322 pistol trigger group.
 
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