This Remington manufactured 14 1/8" long outer magazine tube is for the model 12-C slide action rimfire rifle in 22 S, L, & LR caliber. The overall condition is very good exhibiting a brownish gray patina with a few specks of rust.  (file photo)

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

12-C: 229853, 303506, 408616, 409187, 500140, 597770, 600364, 607712, 640490, 663586, 722004, 789956 & 830348