Just recently I threw away the threaded cap to my old Bluet stove. I had drained what I thought was my last cannister during a recent power outage and started using a newer MSR with its threaded cannister. Then I found two more Gaz/Bluet cannisters in the basement!
It looks like they still sell puncture style cannisters in Europe but not the stoves,
"our most economical and widely available cartridges".