This Remington manufactured outer magazine tube measures 14 1/4" long and is for the model 121 slide action rimfire rifle in 22 s, l, & lr caliber. The overall condition is very good exhibiting a mixture of original blue finish with a brown patina and containing a few specks of surface rust.  (file photo)

Note: Model 121 rimfire rifles with the following serial numbers have been observed with this part: 8992, 11492, 64734, 108148, 143356, 162651 & 164006.