Pre10179 S&W K Frame Pre Model 10 Thumb Piece & Nut Blue Steel Used .310" Trigger Smith & Wesson N Frame

Smith & Wesson N Frame Model 27 Hammer -

contact us with the serial number and we'll confirm compatibility

Compatibility: J Frame Models 42

Factory Part Number: 037950000

686 Plus-1 through current production (7-shot cylinder)

Pre10179 S&W K Frame Pre Model 10 Thumb Piece & Nut Blue Steel Used .310" Trigger Smith & Wesson N FramePre10179 S&W K Frame Pre Model 10 Thumb Piece & Nut Blue Steel Old Style Used Part Serial # 344375 How to determine the model number of your Smith & Wesson Revolver. Swing out the cylinder , check behind the yoke on the frame for a MODEL NUMBER. Model numbers began in 1957 58. So if there is no model number then your revolver may be older than 1957 58. In this case we can possibly still find the part you need with the serial # . If this is the case