True Precision Recoil Spring Tuning Kit Features The True Precision Recoil Spring Tuning Kit is built around a set of springs manufactured from high-strength chrome silicon a material chosen for its ability to hold a consistent spring rate over extended use without taking a set. Five weight options spanning 12 to 20 pounds let the shooter dial in exactly the right amount of resistance to match a given muzzle device suppressor or load. Lighter springs can help a compensated or suppressed slide cycle more reliably with reduced-recoil loads while heavier springs help manage felt recoil and slide velocity on a suppressed host running full-power ammunition. This flexibility turns a single kit into a tuning solution rather than a one-size-fits-all replacement part. A stainless steel non-captured guide rod complete with screw and bushing replaces the factory captured rod and is specifically built for compensated or suppressed 3.7 inch slide models of the P365 XL and X Macro. Swapping springs is a simple process that lets the shooter experiment and settle on the ideal setup for their specific muzzle device and ammunition combination. Made entirely in the USA the kit reflects True Precision s focus on quality components for serious shooters. The True Precision Recoil Spring Tuning Kit is available for sale at GrabAGun for anyone running a compensator or suppressor on their Sig P365 XL or X Macro. True Precision Recoil Spring Tuning Kit Specifications Manufacturer: True Precision Model: Recoil Spring Tuning Kit Type: Spring Compatible Hosts: Sig Sauer P365XL / X Macro 3.7 Color: Black Material: Chrome Silicone Steel Length: 3.70 Includes: 12/14/16/18/20 lb Springs Guide Rod Screw Bushing Available At: GrabAGun