CatShooter:
Do an internet search on the two companies and you will find that (Brno)CZ and Zvastava were never the same company or associated in any way. Brno came about in 1918 in Brno, Czechoslovakia and Zvazstva came about separately in Yugoslavia as the Red Banner Works as it is known at the Kragujevac Arms Arsenal. ZCZ (Zvastava) is also an automobile producer and makes the current Yugo automobile.
Frank de Haas's book on the Bolt Action Rifle will also show they are not one and the same and never were. Brno is a Czech company from inception and Zvastava is a Yugolslav Company from its inception. Totally separate companies and they made totally separate versons of the 98 Mauser action.
The most common or well known form of the BRNO Mauser is the Czech VZ-24 military action which is a very good quality action. Other later models were the commercial ZG-47, and the ZKK among a couple of others.
As far as revisionist European History goes, if you want to push the belief that a Mauser Mark X is Brno made and imported or somehow derived from a company that was once part of Brno, have at it, but it's simply not true. Nor are the current Zvastava actions which up untill very recently were imported by Charles Daly and soon to be sold by Remington. Note my mention of the US arms embargo in my first post which stopped the flow of the Mark X action into the US in the 1980's. Charles Daly just in the past two years acquired State Dapartment approval to import the actions.
Some people have assumed there is/was a link between the two companies becasue the Mark X Mauser has ZCZ stamped in a cirlce on the left receiver wall. ZCZ stands for Zavodi Crvena Zvastava, the Yugoslav Armanent firm which built and sold armaments for the Tito and Milosevik regimes in Yugoslavia. Its inception is totally separate and distinct from BRNO's in Czechoslovakia and the CZ part of the stamping on the receiver has nothing to do with BRNO.
Even the Charles Daly link I provided mentions their association with Zvastava up until very recently when Remington negotiated the right to import the actions.
-BCB