True Precision Recoil Spring Tuning Kit Features The True Precision Recoil Spring Tuning Kit is designed specifically for the Sig Sauer P365 P365 SAS and similar models running a 3.1 inch slide giving the shooter the tools to fine-tune recoil management after adding a compensator or suppressor. Three spring weights 15 17 and 19 pounds are included so the shooter can match spring tension to their specific setup and ammunition. Each spring is made from high-strength chrome silicon steel a material chosen for its ability to hold up under repeated compression cycles without losing tension over time. This range of options lets the shooter dial in reliable cycling whether running standard pressure ammunition or a suppressed gas-heavy configuration. A stainless steel billet-machined non-captured guide rod is included in the kit replacing the factory guide rod with a more precisely manufactured component built for consistent spring seating. Finished in black the kit s components match the factory aesthetic of the P365 platform without standing out. Made 100% in the USA the kit reflects True Precision s focus on domestic manufacturing and tight tolerances. For P365 owners running a compensator or suppressor this tuning kit offers a straightforward affordable way to restore reliable cycling and reduce muzzle flip. True Precision Recoil Spring Tuning Kit Specifications Manufacturer: True Precision Model: Recoil Spring Tuning Kit Type: Spring Color: Black Compatible Hosts: Sig Sauer P365 P365 SAS 3.1 Slide Material: Chrome Silicone Steel Length: 3.10 Includes: 15 lb 17 lb 19 lb Springs Stainless Steel Guide Rod Available At: GrabAGun