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. The kit includes multiple spring weights to help you fine-tune your setup for reliable cycling and reduced recoil across various conditions. Features : "Designed for Sig Sauer P365, P365 SAS, and Similar Models with 3.1" Slide" Springs Are Made From High-Strength Chrome Silicon Includes Stainless Steel Billet-Machined Non-Captured Guide Rod Kit Includes 15-LB, 17-LB, and 19-LB Springs 100% Made in the USA