What's the point of that?
I can't get it to come off. Any ideas?
Yep.I thought that the Marlin lever actions have the bolt marked with the last 3 digits at the factory as an 'assembly' number...
It keeps the bolt married to the receiver after final fitting through the rest of the process...
Checked. All of my 336's have the last few digits of the SN on the bolt. On mine it came from the factory that way. I could find none on my Winchester 94.