This Remington manufactured rear sight assembly is for the model 12 slide action rimfire rifle with the barrel notch 3 1/4" ahead of the receiver and is in very good condition exhibiting a mixture of original blue finish with a brown patina and some specks of rust present. (file photo)

Note: Remington model 12 takedown slide action rimfire rifles with the following serial numbers have been observed with this part:

12-A: 374065 & 570191

12-C: 229853, 303506, 409187, 597770, 600364 & 607712