L233 Smith & Wesson NOS L Frame Model 581 US Customs 4" Barrel .357 Mag. trigger parts Direct Replacement: Drop-in fit for

Direct Replacement: Drop-in fit for factory rebound spring

5" and 3" barrel configurations

Garage walls and workshops

Direct Replacement: Fits Model 38 J Frame revolvers

L233 Smith & Wesson NOS L Frame Model 581 US Customs 4" Barrel .357 Mag. trigger parts Direct Replacement: Drop-in fit forL233 Smith & Wesson New Old Stock L Frame Model 581 US Customs 4" Barrel . 357 Magnum Light Handling Marks New Parts and Accessories. Cleaned, Inspected, and Guaranteed! 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