This Winchester manufactured 20" long shortened barrel in 12 gauge with a 2 3/4" & 3" chamber, fixed factory full choke which is now cylinder, and a bright bore that rates very good with light freckling is for the model 37A single barrel shotgun and is in very good condition retaining a mixture of thinning original blue finish with a brown patina and having light wear and some light specks of surface rust. The front sight bead and complete extractor assembly are included. (file photos)