I20 Smith & Wesson Used I Frame Blue 4" Pinned .38 CTG Regulation Police Barrel 460 Critical component for reliable cylinder

Critical component for reliable cylinder latch operation on modern Smith & Wesson revolvers with MIM internal parts

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Part Number: K904

This barrel fits Smith & Wesson J Frame Model 37 Airweight revolvers chambered in

I20 Smith & Wesson Used I Frame Blue 4" Pinned .38 CTG Regulation Police Barrel 460 Critical component for reliable cylinderI20 Smith & Wesson Used I Frame Blue 4" Pinned . 38 CTG Regulation Police Barrel No Locking Bolt Assembly & No front Sight 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 #