Part # 69312 Wolff for Smith & Wesson Pistol S&W 469 6904 SERVICE PAK TYPE-II 9MM
Service Paks for use in: 469, 669, 6904, 6906, 6926, 6944, 6946 9mm
See below about Service Paks:
TYPE I - For Smith & Wesson semiautomatic pistols contains the following springs to replace weakened or broken springs, returning the pistol to original factory condition: recoil spring, extra power firing pin spring, hammer spring, extractor spring, 2 ejector springs, magazine catch spring, drawbar plunger spring, safety lever plunger spring, slide lock plunger spring, safety lever detent spring and rear sight body plunger spring.
TYPE II - contains all springs described in Type I pak above and a +5% extra power magazine spring.