Not quite like the Simmons rib in that turning the flange on the barrel indicates Winchester's intention to produce a Cutts-specific barrel. I doubt if any plain barrel "skeets" went to dealers without the steam whistle so it's factory even IF Lyman was a contract installer. The analogy is screw choking. Lots of aftermarket tubes in muzzles threaded by the manufacturer of the guns and lots of fixed choke guns with the "modification". The irony: the fiddled WS- guns are sought after; the "factory" SKEETS not particuarly desirable.
jack
