2J45 Smith & Wesson J Frame Revolver Model 637 Barrel 1 7/8" SS .38 Sp NOS Multi-Model the 15 LB spring is

the 15 LB spring is an excellent choice for carry use

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JB42184 Smith & Wesson J Frame Model 42 Air Weight Trigger Used

Number of Springs: 4 pieces (1 mainspring

Length: 5 3/4"

2J45 Smith & Wesson J Frame Revolver Model 637 Barrel 1 7/8" SS .38 Sp NOS Multi-Model the 15 LB spring is2 Smith and Wesson J Frame Revolver Model 637 Non Pinned Barrel 1 7 8" Stainless Steel . 38 Special New Old Stock Revolver Pistol Gun Part. 2J45 Smith & Wesson J Frame Revolver Model 637 Barrel 1 7 8" SS . 38 Special NOS We sell used, new & new old stock Smith & Wesson double action revolver parts. Shoot us an email or give us a call for all your S&W Gun needs! USA Guns And Gear How to determine the model number of your Smith & Wesson Revolver. Swing