This factory manufactured synthetic magazine tube bracket is for the Sears, Roebuck and Co. model 3T No. 273.2390 semi-auto rimfire rifle and is in very good condition with light wear and staining. (file photo)
Note: Sears, Roebuck & Co. model 3T semi-auto rimfire rifles with the following serial numbers have been observed with this part: 74160 & 115165
