JB42184 Smith & Wesson J Frame Model 42 Air Weight Trigger Used .38 Special Model 3914 Compatible: S&W revolvers using pinned

Compatible: S&W revolvers using pinned front sights from the 1950s through present

38 S&W is a shorter

compact J Frame revolver designed specifically for concealed carry

Mounts to any standard Picatinny or Weaver-style rail

Sight Style:

JB42184 Smith & Wesson J Frame Model 42 Air Weight Trigger Used .38 Special Model 3914 Compatible: S&W revolvers using pinnedJB42184 Smith & Wesson J Frame Model 42 Air Weight Trigger Used . 38 Special 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 # . If