Schematic and info needed for a BRNO/CZ ZBK 110

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  • Last Post 21 March 2021
loco posted this 20 March 2021

The ZBK is a little single shot in .222 Remington. Got it cheap and so far , worth the money. With jacketed, under 1 MOA at 100. Trigger pull comes in at 8 1/2 pounds though. I want to pull the trigger group and clean up the terrible pull but can’t find a schematic anywhere. There are only two pins on the receiver , both are holding the trigger group. Only one screw , and it is the firing pin retainer. I can only guess that just pulling both pins will drop the trigger group and I can continue with my plans and nothing else needed? BUT....... is there something I’m not seeing that might cause little parts to become airborne if I do this? It does happen. Lol. Any help out there? Thanks in advance,Loco. 

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MarkinEllensburg posted this 20 March 2021

Pure speculation but it appears to be a break open action. Start by removing the fore-stock and barrel and then the buttstock. Then you might be able to peer into the action to see captured springs that might fly when you drive the pins out.

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loco posted this 20 March 2021

Yes it is break open. Tried to remove butt stock today but didn’t have an extension long enough. Off to town tomorrow for a longer extension. That was my hopes...might tell more when it comes off. Just not much info out there for this gun. Looks simple enough but sometimes there are little tricks.....remove trigger assembly with hammer cocked.......or hammer in fired position or etc. Hoping to find a schematic but not getting my hopes up. Thanks. 

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JeffinNZ posted this 20 March 2021

I would say just punch out those two pins and see what happens.  

Cheers from New Zealand

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loco posted this 21 March 2021

Ok. Took the butt stock off and found one more anchor point holding the trigger group on. Two pins and the screw on the back of the receiver , and the trigger group drops right out. Such a simple setup. Was able to reduce trigger pull with a little clean up and polishing. But.... as far as I could tell, no internal parts were hardened , very soft metal. I used the Brownell’s hardening compound to surface harden the trigger and hammer surface. Cheap little project and I hope my info might help someone in the future. Thanks to all in this club for sharing their knowledge of firearms. I for one really appreciate the input. Loco. 

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