To be honest, I did not "fit" the extractor, I only fabricated it. I am fortunate to have a good friend who is a tool and die maker and has a Bridgeport-clone milling machine in his garage. Bill is also a shooter so he understands the "whys and wherefores" of these jobs. Whenever I need a job done that requires a mill, like sinking the mortise for the extractor, Bill is the man I go to. You're correct, he outdid himself on this one. Once I had filed and stoned the face of the extractor flush with the barrels, it was hard to see the seam.