This Remington manufactured 14 7/8" long inner magazine tube assembly is for the model 12-A slide action rimfire rifle in 22 S, L, & LR. This piece is in very good condition with light wear and some light tarnishing to the brass tube. (file photo)
Note: Remington model 12-A slide action rimfire rifles with the following serial numbers have been observed with this part:
12-A: 100823, 351695, 374065, 570191 & 802984