K192 Smith and Wesson K Frame Model 16 Thumb piece Blue Used .32 Cal 4 inch 66 K-Frame

66 K-Frame

32 H&R Magnum) - titanium

This sight is designed for Smith & Wesson revolvers that utilize a pinned-in front sight blade:

Important Installation Note: This part is oversized and requires professional fitting by a qualified gunsmith

Part #: 143

K192 Smith and Wesson K Frame Model 16 Thumb piece Blue Used .32 Cal 4 inch 66 K-FramePart# K192 Smith and Wesson K Frame Model 16 Thumb piece Blue Used . 32 Caliber Please call or email with any questions! 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 # .