Brownells Pro-Spring Kit Fits Smith & Wesson 39/Smith & Wesson 459/Smith & Wesson 539

The Brownells Pro-spring kit is engineered to enhance the performance and reliability of Smith & Wesson models 39, 459 and 539. This comprehensive kit includes precision-manufactured springs designed to replace the original factory components, ensuring optimal function and longevity. Each spring is crafted from high-quality materials to provide consistent tension and resilience, thereby improving the firearm's operational efficiency. The kit is ideal for users seeking to maintain or upgrade their Smith & Wesson pistols, offering a straightforward installation process that requires minimal technical expertise.Includes one FSW 14 lb, recoil spring, one 20 lb, hammer spring, one 18 lb, reduced power (RP) hammer spring and one extra power (XP) firing pin spring