This Remington manufactured late variation hammer assembly with roll, roll pin and serrated spur is for the later No. 4 and new model 4 single shot Rolling Block rimfire rifle and is in very good condition exhibiting a brown patina with some rust specks present. (file photo)

Note: Remington No. 4 and new model 4 rolling block rimfire rifles with the following calibers, frames & serial numbers have been observed with this part:

22 Rimfire Solid Frame: 

32 Rimfire Solid Frame:

22 Rimfire Takedown Frame: J313458 & 331072

32 Rimfire Takedown Frame: