Greetings all. I have a technical question for anyone who has an expertise on the internals of S&W revolvers, especially the N-Frame and more specifically, the 627-0 Model of 1989 which is a special production N-Frame .357 with the un-fluted cylinder. I've worked on Smiths over the years, but have never seen this situation before. Any input would be greatly appreciated. On this particular revolver, I've noticed upon disassembly that the hand which slides onto the trigger assembly is separate from the pivot pin. Ordinarily, the hand has a pivot pin that is integral (attached), and it would be inserted into the trigger while the small pin passes through the slot in the trigger and is spring loaded. The hand in my situation is separate from the pivot pin and is instead attached to the trigger, with a single punch indent on the opposite side of the trigger that stakes the pin to the trigger. The opposite end of the pin that the hand slips onto is peened flat, creating a larger diameter overhang (like the hammer end of a punch that's been peened over) to provide a ledge for the hand to keep it in place during assembly. Of course, since the peened end of the pin creates a larger outside diameter, the hole in the hand is also larger so that it can pass over the peened surface to its final resting place on the pivot pin. Needless to say, since the pivot pin outside diameter is smaller than the inside diameter of the hole in the hand, it creates an awfully sloppy fit. When the revolver is fully assembled, the setup works perfectly fine. However, in the back of my mind it just doesn't seem right. Therefore, does anyone know if this is typical of this model, or if somewhere along the way the pivot pin has been broken off of the hand? Thanks in advance for your input. I've included a couple of pics. The first pic is from Midway's website of a typical N-Frame hand with an integral pin. The second pic is of my parts.
