Get the most out of your compensated or suppressed Sig Sauer P365 3.1" with this True Precision recoil spring tuning kit. Made from high-strength chrome silicon these springs deliver consistent long-lasting performance for reliable cycling and reduced recoil across various conditions.True Precision Recoil Spring Tuning Kit for Sig Sauer P365Designed for Sig Sauer P365 P365 SAS and similar models with 3.1" slideSprings made from high-strength chrome siliconIncludes stainless steel billet-machined non-captured guide rodKit includes 15-LB 17-LB and 19-LB springs for fine-tuning100% Made in the USAPerfect for optimizing compensated or suppressed P365 setups this tuning kit allows you to customize spring weight for your specific configuration and ammunition requirements.