This Winchester manufactured 28" long barrel sub-assembly is in 16 gauge with a 2 3/4" chamber, fixed factory full choke, and a bright bore. This barrel sub-assembly is for the model 37 single barrel shotgun and is in very good condition retaining most of its thinning original blue finish with honest wear and some scattered specks of surface rust. The front sight bead is included but the extractor assembly is sold separatety. This barrel has the second variation barrel printing. (file photos)