This Winchester manufactured late variation operating slide spring guide is for the model 100 semi-auto carbine and rifle and is in very good condition with light wear. The late variation operating slide spring guide does NOT use a C-clip as the stop but the rim is manufactured as part of the guide.  (file photo)

Note: Winchester model 100 semi-auto rifles and carbines with the following serial numbers have been observed with this part: 106996, 137797, 142776, 167715, A231403 & A239625