Since I originally posted a picture of my new 627 PC Snubby several weeks ago, there has been a lot of PMs about the Fluted Cylinder and whether there were any MIM parts in the Performance Center model. I was in contact with S&W this morning to research this gun. The particular 627 based upon the serial number was made in May, 2010 with a fluted cylinder. S&W advised that in May, 2010 they made a bunch of fluted as well as unfluted guns in the PC Section. The 627 PC does not have any MIM parts in it according to S&W. The rep i spoke with advised that in June forward they used unfluted cylinders in their 627, 629, & 657 model snubbys. Hope this helps some.
Carl