The True Precision 365STK Recoil Spring Tuning Kit for Sig Sauer P365 3.1" models is built to help you dial in smoother cycling and more controlled recoil on compensated or suppressed setups. This kit pairs a stainless steel billet-machined non-captured guide rod with high-strength chrome silicon springs in multiple weights, giving you a precise, drop-in upgrade over the factory assembly.

Ideal for shooters who want to fine-tune their P365, P365 SAS, or similar 3.1" slide variants, this kit lets you match spring weight to your specific ammunition, compensator, or suppressor configuration for more consistent function and reduced slide velocity. It is a purpose-built performance part that reflects True Precision’s focus on thoughtful engineering and dependable, shooter-focused design.

Key Features:

• Manufacturer: True Precision
• Model: 365STK Recoil Spring Tuning Kit
• Compatible Models: Sig Sauer P365, P365 SAS, and similar 3.1" slide variants
• Application: Compensated or suppressed 3.1" P365 configurations
• Spring Material: High-strength chrome silicon
• Guide Rod Material: Stainless steel billet-machined
• Guide Rod Type: Non-captured
• Included Spring Weights: 15-lb, 17-lb, 19-lb
• Color: Black