The third post stating "Known world wide as the 602 Brno, the CZ 550 Safari...." is in error. They are similar but as agazain says, the trigger/safety design of the 602 is completely different from the 550 and parts can't be swapped. There was a thread over on (IIRC) AR quite a while back where someone was trying to find an aftermarket trigger for a 602 and it would have entailed welding lugs to the underside of the action for mounting (again as agazain said because the trigger group mounts to the bottom metal not the receiver). Not sure what (if any) replacements for the original 602 trigger group are currently available, but would do my research before buying if the factory parts aren't to your liking.
Ed Lapour site (as suggested by safariman)-
http://www.edlapourgunsmithing.com/IIRC the 602's and 550's were manufactured in different plants, by different companies. Here is a more detailed history of the CZ/Brno factories, about half way down-
http://www.czforumsite.info/index.php?action=printpage;topic=12199.0
From link-
At some point the manufacturing facility in Brno was renamed to Zbrojovka Brno (Brno Arms). The manufacturing facility in Uhersky Brod became a member of the Zbrojovka Brno Narodni Podnik in 1965. At this point the firearms produced at Uhersky Brod were also marked (I won't say "used the trademark") "Brno". I think it's important to note here that while these were still physically different manufacturing facilities, both were a part of the same National Enterprise. That's an important distinction since what we, in a capitalistic society, think of as "companies" and "trade marks" either donot exist or have different meanings in a Socialist State.
