Stevens 5100 Different Barrels ?

So, my newly acquired 5100 in 12ga came up in passing in conversation with a buddy of mine.

He mentioned that he believes they offered different barrels such as 20 ga and 410 for this model.

Can anyone confirm if this is true, if they are interchangeable, and lastly, where one might acquire these ?

Thanks !

Your buddy is pretty much wrong. They made the guns in all the different gauges, but the barrels are not interchangeable, and the receivers were not all the same size.

There ya go !