This Winchester manufactured 20 3/4" first variation barrel with collar is for the model 190 semi-auto rimfire rifle in 22 S,L or LR caliber and designed for use with the synthetic rear sight which mounts using a single screw and not the later dovetailed type rear sight. The barrel assembly is in very good condition retaining most of its original blue finish with light wear and possibly a few specks of surface rust present. This barrel may have an import marking present. (file photos)