This Thompson Center manufactured brass butt cap screw with a dome shaped head measures between .440" and .480" in length and is for the later Patriot muzzle loading pistol. This screw is in very good condition with light slot wear and a moderate tarnish. (file photo)
Note: Thompson Center Patriot muzzle loading pistols with the following serial numbers have been observed with this part: 36659 & K5638
