LB58121 Smith & Wesson L Frame Model 581 4" Barrel Blue Used .357 Magnum J187 Compatible With: M1A

Compatible With: M1A

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Part Number: J789

Brand: HiViz

Smith & Wesson Used N Frame Model 57 Rebound Slide Assembly — Part #N79

LB58121 Smith & Wesson L Frame Model 581 4" Barrel Blue Used .357 Magnum J187 Compatible With: M1ALB58121 Smith & Wesson L Frame Model 581 4" Non Pinned Barrel Blue Used . 357 Magnum 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