That wasn't a new one then, Mossberg went to threaded chokes a long time ago. I actually prefer the old fixed choke barrels though, they swing better for me. They went to threaded chokes because it was cheaper to do, not because it was better. The old swagged chokes were for cost savings, but I don't think Mossberg ever used those, and a good fixed choke costs more to cut now with the equipment used.