Okay, Easily missed the detail about the sight mounts..On Barrels for 1903 versions, I assume the service rifles did not have any-welding??yours showed a big Barrel/rec.weld..mine is about 1/4 inch in diameter...I thought it was done at arsenal, before i read of yours..BTW, Addiction, I had the chance to go to CMP SS a few weeks ago, I could not find another drill rifle in the barrel, that I liked enough to adopt.. One of them had a Gorrila weld at the top, with the bolt firmly welded to the reciever...made me queasy in the stomach..as it was nice rec. Og.