

No smith. just put the plug without the threads in place, and marked it.
Then drilled. Clean hole, no prob. It would be better under the barrel though. The supplied screw was a little short, so I used a sub. very tight. I saw a pic somewhere of a rail that clamped on the flat spot on the barrel, where the barrel meets the reciever in an L shape. I thought it was on this site, but I never could find it again. anyway this is nice, easy, and lower than up by the top rail. Must have messed up on the pics, they look like thumb nails.
Karl