This Remington manufactured simple rear sight is for the earliest of No. 4 rolling block rimfire rifles and is in very good condition exhibiting a brownish gray patina with light wear and possibly having been regulated by a previous owner. (file photo)

Note: Remington No. 4 rolling block rimfire rifles with the following serial numbers, calibers and frame styles have been observed with this part:

22 Rimfire Solid Frame: 42532, 44993 & 141404

32 Rimfire Solid Frame: 77951, 81812 & 130905

22 Rimfire Takedown Frame: 159261, 162817

32 Rimfire Takedown Frame: 155639 & 158988