That muzzle brake is the exact one on the other rifle on the rack. So the "counterbored" rifle is probably just a metal thread protector. The one I looked at is very well done, I didn't even notice the seam between the cap and the foresight. Thank you guys, I learned something new, if I see that rifle again I will give it a better look over to be sure.

Although I do also recall there is a thin split in the buttstock developing from the butt-plate towards the grip. Similar to the spot where Arisakaicon and Finn MN rifles were joined.

The asking price was $450, marked down to $350 (CDN).

Good conversation all.