This is the extractor .32-20 cal Winchester 1873 rifle. There is no spring associated with this extractor because the extractor itself is a spring. It is CNC machined from high-quality spring steel folloWinchesterg original factory specifications Winchester 1873 small-caliber rifles. Use pin p118 to hold the extractor in the milled out section on top of the breech bolt. Note: the .32 cal extractor can be made to work in the .44 or .38 cal guns because of its larger size by grinding away excess metal to the contours of the .44-.38 cal extractor. Not visa versa though because there is not sufficient metal to form the hook on the .44-.38 .32 cal. (the correct extractor large cal .38 and .44, is part number wp620-a)