This Thompson Center manufactured frizzen spring is for the Hawken muzzle loading flintlock rifle and is in very good condition exhibiting a brown patina with light surface rust present. This part was not completely manufactured yet as it does not have the mounting screw hole drilled or tapped on the back side, has a sprue on the far right side that should be filed off and it does not have the factory blue finish applied. Additionally, they might need to be tempered as they do not rebound well. (file photo)