This Winchester manufactured barrel collar cover is for the model 190 semi-auto rimfire rifle with the dovetail notch 2 1/2" ahead of the receiver and this part is in very good condition with a few specks of surface rust present. (file photo)

Note: Winchester model 190 semi-auto rimfire rifles with the following serial numbers have been observed with this part:

No Prefix: 564118, 576772, 601348, 602902, 605304 & 616458

B Prefix: B1060577, B1113193, B1121661, B1123247, B1516483, B1707786, B1850799, B1852446, B1964714 & B1996270