Wolff hammer spring engineered specifically for Smith & Wesson 9mm pistols including Models 39, 439, 539, 639, 3904, 3906, 3944, and 3946. Also compatible with numerous other S&W firearms: Models 59/459/559/659, 5903/5904/5906, 5923/5924/5926/5943/5944/5946/5967, 909/910/915 in 9mm; Models 645/745/4506/4526/4536/4546 in .45 ACP; Models 1006/1026/1066/1076/1086 in 10mm; and Models 410/411 in .40 S&W. Precision-manufactured for optimal reliability and performance.
S&W Hammer Spring (Long) 16LB Pak of 1
Part # 27516