CZ 858 - swapping parts and measuring headspace

[hal9000]

I was told by the service guy for CSA that it can be problematic/dangerous to swap parts between these rifles.
I have several parts kits and two rifles. My question is: When swapping parts what specifically should one look for and measure? I know there is something called "headspace" but I have no idea how to check that.
If anyone can help or point me in the right direction that would be really appreciated.
thanks.

 

[wbaad]

Other than replacing bolts, locking blocks and maybe gas Pistons I don't see any problem, and even those could be used with headspace being checked and tested. Early csa rifles are built from surplus parts to begin with. I think it's just a disclaimer...

Headspace can be checked with a specific gauge for caliber, or a trip to a gunsmith.

 

[hal9000]

Headspace can be checked with a specific gauge for caliber, or a trip to a gunsmith.

where could I find a gauge for 7.62x39? is this called a go/no go gauge?

 

[Porkchopsandwhich]

bolts, bolt carrier, locking blocks perhaps, worn locking lugs on the receiver would be a factor.

 

[StrelokRussia]

I just replaced the bolt on my vz58 with a surplus 858.

It's a pain to find a headpiece gauge in Canada so instead I used the tape method to get it close.

You just need a few unfired 7.62 rounds and masking tape.

 

[wbaad]

where could I find a gauge for 7.62x39? is this called a go/no go gauge?

A go/nogo or field gauge would work. Brownells in the USA should have them and they ship to Canada no problem