Stretching my memory . . . but I believe Winchester's Model 23 was the first sxs with factory choke tubes. I have a very late Japanese made SKB sxs (Model 385) with choke tubes. That's a feature I can live without. But at least SKB got around to making sxs that had a straight stock as well as either a generous splinter forend or perhaps a semi-BT. rather than the very large BT found on all the Ithaca-imported sxs except the Model 100. Looked like SKB was on the right track (minus the tubes) by offering something pretty close to a classic American-made sxs (except for the SST--although it was a pretty decent trigger.) And then it all came to an end.
