I few more pictures. I went ahead and got it.
I don't think the stock has been messed with. The cosmo is still in the crevices and the bolt seems to have been peened. I think if it was sanded or stripped, the metal adjacent to the wood would show evidence since I don't think the bolt can be removed. In the picture you can see the peen which did have cosmo in the peens until I picked it out with the plastic pick. I was going to take it down and give it a through cleaning, but I'm thinking I will just do what I can with a plastic pick.
I'll look up and see what the difference in a pinned barrel and a threaded one. I'm not sure what difference that makes.
On the trigger, I included a closer picture. Not sure if that adds info or not. This has the cleaning kit with it as well.
Every number I have found stamped matches the receiver: receiver, rear housing, stock, trigger guard, magazine, bolt, bolt carrier. I could not find numbers on the bayonet, cleaning rod, cleaning kit, or butt plate.
Picture of the bayonet cutout.
Sent from my HTCONE using Tapatalk