This Winchester manufactured first variation mainspring with the wide front curve is for the post 64 model 94 top eject lever action carbine manufactured roughly between 1964 and 1967 with a serial number below 3,000,000 and is in near excellent condition with light wear. (file photo)
Note: Winchester model 94 top eject lever action carbines with the following serial numbers have been observed with this part:
30-30: 2859208