This Savage manufactured filler screw is for the forward larger threaded hole on the top of the Sporter model 23A bolt action rimfire rifle receiver which is visible when the receiver peep sight is NOT installed. This filler screw is in very good condition with light wear. (file photo)

Note: Savage model 23A Sporter rimfire rifles with the following serial numbers have been observed with this part: 28912, 33074, 67951, 120604, 125548.