True Precision FUSESTK Recoil Spring Tuning Kit - SIG P365 FUSE 4.3" 9mm

The True Precision FUSESTK Recoil Spring Tuning Kit is an aftermarket tuning package engineered specifically for the SIG Sauer P365 FUSE equipped with the 4.3" barrel in 9mm Luger. True Precision built this kit to give P365 FUSE owners a way to dial in slide cycling once a compensator or sound suppressor is threaded onto the pistol, where the added back pressure and mass of a muzzle device change how the factory recoil spring behaves.

The kit ships with four non-captured recoil springs in distinct weights and color codes so you can tune the feel and reliability of your P365 FUSE to match your ammunition and muzzle device:

• 10 lb (Red) - lightest spring for reduced reciprocating mass setups
• 12 lb (Green) - mid-weight tuning spring
• 14 lb (Black) - factory stock weight for standard, unmodified operation
• 16 lb (Yellow) - heaviest option for heavy compensators or suppressed use

Swapping springs lets shooters tame felt recoil, firm up slide return, and work around cycling issues that can show up once a compensator or suppressor is attached to the threaded P365 FUSE barrel. The non-captured design drops in without permanent modification, and each spring is color-coded for quick identification on the bench.

Designed around the SIG P365 FUSE 4.3" compensated/suppressed pistol platform, this True Precision recoil spring kit is a straightforward upgrade for shooters who want to fine-tune how their carry or range pistol runs with a muzzle device installed.