This Winchester manufactured 28" plain barrel with a fixed modified choke and a bright, very good bore is for the model 1200 slide action shotgun in 20 gauge with a 2 3/4" chamber. The overall condition is very good retaining most of its original blue finish with a few specks of light surface rust and honest wear. (file photos)
Note: Firearms with the following serial numbers in 20 gauge with a 2 3/4" chamber have been found with this part: L566101.