Pre10179 S&W K Frame Pre Model 10 Thumb Piece & Nut Blue Steel Used X-Frame Model 6904 (

Model 6904 (

Model Frame Notes 317 J Frame 332 J Frame 337 J Frame 340 J Frame 342 J Frame 360 J Frame 637 J Frame Dash -1 only 638 J Frame Dash -2 only 642 J Frame Verify your exact dash number before ordering

We strongly recommend professional installation by a qualified gunsmith

This trigger bar provides a heavier trigger pull weight

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Pre10179 S&W K Frame Pre Model 10 Thumb Piece & Nut Blue Steel Used X-Frame Model 6904 (Pre10179 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