This Remington manufactured mainspring rod is for the model 12 slide action rimfire rifle and is in very good condition with light wear. (file photo)

Note: Remington model 12 slide action rimfire rifles with the following serial numbers have been observed with this part: 351695

12-A: 3867, 30310, 374065, 741138, 802984 & 806842

12-C: 229853, 303506, 408616, 409187, 500140, 600364, 607712, 640490 & 663586