This Winchester manufactured 4th variation operating slide assembly with the hold open notch is for the model 77 semi-auto rimfire rifle and is in very good condition with light wear. (file photo)
Note: Firearms with the following serial numbers have been observed with this part (however it appears that some of these rifles may have already had this part as a replacement): N.S.N., 27185, 27369, 146085, 154596 & 162478.
