George

Bob DeVries at Kudu Services in Montrose, Victoria does a lot of Brno ZKK work.
I know he has machined up at least one correct profile ZKK barrel with integral bosses, but his work, while very good, certainly ain't cheap

Also Alex Beer (member of this forum) in Tasmania seems to like the ZKK, and has made a few custom rifles on the action... perhaps drop him a PM.