Mainspring - Original
This Winchester manufactured mainspring is for the model 77 semi-auto rimfire rifle and is in near excellent condition with light wear. (file photo)
Note: Firearms with the following serial numbers have been observed with this part: N.S.N., 3385, 27185, 27369, 72897, 73225, 130287, 146085 & 162478.
- Manufacturer: Winchester
- Manufacturer ID: 62Win: 4377
- Product Code: 20085-77DM
- Availability: 0
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$8.95