This recoil spring guide assembly is constructed of durable steel components with black finishing. This assembly includes the appropriate recoil springs and guide rod for the Sig Sauer P365 pistol models. This factory original part is made to the highest Sig Sauer standards in material and workmanship. The recoil spring assembly is perfect to replace you original worn parts, or to just keep your Sig Sauer firearm running in top operating condition. From the world leader in firearms, genuine Sig Sauer parts are designed around the same relentless standards put into every pistol and rifle they make. Kit up, dress up, or replace your original parts with nothing but genuine parts from Sig Sauer.