SIG SAUER P365/P365X 9mm 3.1-Inch Recoil Spring Assembly

SIG SAUER P365 9mm Recoil Spring Assembly

Restore a compatible P365 to its factory configuration with this genuine SIG SAUER recoil spring assembly. Designed as a complete replacement unit for 9mm P365-family pistols equipped with a 3.1-inch barrel, the assembly combines the guide rod and recoil spring components in a compact, captured package. It is intended for owners who want an original-equipment service part rather than an aftermarket spring of uncertain weight or fit.

SIG SAUER identifies this part as SKU KIT-365-RECOIL-SPRING. The store’s manufacturer part number is listed in normalized form as KIT365RECOILSPRING. The assembly is finished in black and has an approximate recoil length of 2.44 inches. It is chambering-specific for 9mm P365 applications.

Compatibility

• Compatible: SIG SAUER P365 and P365X pistols chambered in 9mm with a 3.1-inch barrel.
• Not compatible: P365-XL, P365-XMACRO, P365-AXG, or P365-380 models.

Confirm the model, caliber, and barrel length of your pistol before ordering. Similar-looking P365-family recoil assemblies are not interchangeable across every slide length or caliber. The 3.1-inch barrel requirement is the most important fit check for this item.

Factory Replacement Design

A recoil spring assembly helps control slide movement, absorb recoil energy, and return the slide to battery during the operating cycle. Springs are wear components, so performance can change after extended use. A fresh factory assembly can be appropriate during scheduled maintenance or when a qualified armorer identifies the recoil system as due for replacement. Using the complete SIG SAUER assembly preserves the intended spring and guide-rod relationship without mixing individual components.

The assembly is supplied as a ready-to-install captured unit. SIG SAUER’s P365 manual treats the recoil spring guide assembly as a single service component and cautions against disassembling it. Installation and maintenance should follow the instructions for the exact pistol model.

Product Details

• Manufacturer: SIG SAUER
• Manufacturer SKU: KIT-365-RECOIL-SPRING
• Store-listed MPN: KIT365RECOILSPRING
• UPC: 798681593996
• Platform: P365 / P365X
• Caliber: 9mm Luger
• Barrel compatibility: 3.1 inches
• Approximate recoil length: 2.44 inches
• Color: Black
• Component type: Complete captured recoil spring assembly

Maintenance and Safety

Unload the firearm completely and verify the chamber is empty before inspection, disassembly, or parts replacement. Wear eye protection because spring-loaded components can move unexpectedly. Follow the current SIG SAUER owner’s manual and all model-specific procedures. If fit, wear, or function is uncertain, have the work performed or checked by a qualified armorer. After installation, complete the manufacturer’s prescribed function checks before returning the pistol to service.