True Precision Recoil Spring Tuning Kit Features The True Precision Recoil Spring Tuning Kit is built around high strength chrome silicon springs engineered for consistent function and extended service life. Four spring weights 10 12 14 and 16 pounds are included so the shooter can select the exact tension needed for a given load a suppressor or a compensator. Lighter springs can improve cycling with reduced-recoil ammunition while heavier springs help manage felt recoil and slide velocity on a compensated or suppressed Sig Sauer P365 FUSE. This flexibility lets an owner tune the pistol s function rather than accept a single factory spring rate. The kit also includes a stainless steel non-captured guide rod with its own screw and bushing giving the recoil system a more durable and serviceable foundation than the factory polymer component. Non-captured guide rods are easier to disassemble for cleaning and spring swaps which matters when a shooter is testing multiple spring weights. Built specifically for the 4.3 inch Sig Sauer P365 FUSE platform this tuning kit is sold as a complete 100 percent USA made package. It gives competitive shooters and suppressor hosts a straightforward way to keep their pistol running reliably across a range of conditions. True Precision Recoil Spring Tuning Kit Specifications Manufacturer: True Precision Model: Recoil Spring Tuning Kit Type: Spring Kit Color: Black Material: Chrome Silicon Steel Compatible Hosts: Sig Sauer P365 FUSE 4.3 Includes: 10 12 14 16 lb Springs Stainless Steel Guide Rod Screw Bushing Available At: GrabAGun