Wolff 47412 RP Recoil Spring 12LB - S&W Model 5904 3904 9mm Model 22A Side plate screw replacement is

Side plate screw replacement is straightforward but care should be taken not to over-torque or strip the frame threads

5 oz Country of Origin: United States Manufacturer: Smith & Wesson (OEM)

and new-old-stock Smith & Wesson parts

Part Number: 69043C

Wolff 47412 RP Recoil Spring 12LB - S&W Model 5904 3904 9mm Model 22A Side plate screw replacement isWolff Reduced Power Recoil Spring S&W 3904 5904 Series 9mm Wolff 12 LB reduced power recoil spring (Part #47412) designed for lighter recoil and faster cycling in Smith & Wesson 9mm pistols. Includes firing pin spring. Premium USA made for competition and target shooting. Compatible Models: Model 39 Series: 39, 439, 539, 639 Model 59 Series: 59, 459, 559, 659, 5903, 5904, 5906, 5923, 5924, 5926, 5943, 5944, 5946 3900 Series: 3904, 3906, 3913, 3914,