Yep, it's the stock bolt.




The factory head is a straight sided cylinder about 1/2" in diameter and 1/4" thick, with a screwdriver slot. I modified it by using JB Weld to attach
a 1/2" flanged nut on top of the cylinder. That lets me use the same 1/2" socket used for the breech plug to remove the stock. It's a lot easier than
a screwdriver.

Here's the modified bolt head.




Now here's the scary thing! Did you notice what looks like heavyrust on the action -especially around the edges where the stock sits? I was SHOCKED when I saw
the pictures. None of that is visable to the naked eye. I even put a magnifying glass on those spots and can not see rust. What the HELL? The only visable rust is on the top of that nut, around the inside edge of the hole.