This Winchester manufactured rear sight elevation screw is for the 30-B series rear sight on the model 1906 slide action rimfire rifle and is in very good condition exhibiting a brownish gray patina with light slot wear. (file photo)

Note: Winchester model 1906 takedown slide action rifles with the following serial numbers have been observed with this part:

300K: 312061 & 333347

400K: 442486

600K: 655997