Smith & Wesson Sigma SW40F Recoil Spring Assembly 4" Barrel .40 S&W — Factory New Part 250790000

Smith & Wesson Sigma SW40F Recoil Spring Assembly — 4" Barrel, .40 S&W, Factory New OEM Part

Genuine factory new Smith & Wesson OEM recoil spring assembly for the Sigma SW40F pistol with the 4" barrel. The recoil spring assembly absorbs and controls the rearward force of the slide during firing, returning the slide to battery and chambering the next round. A worn or fatigued recoil spring causes increased felt recoil, failure to return to battery, feeding malfunctions, and accelerated wear on the frame and slide. Replacing it with a genuine OEM assembly restores factory-specification cycling and reliability.

Specifications

• Part Number: 250790000
• Manufacturer: Smith & Wesson
• Part Type: Recoil Spring Assembly
• Caliber: .40 S&W
• Barrel Length: 4" only
• Platform: Sigma Series (SW40F)
• Condition: Factory New — genuine OEM part

Compatibility

• Smith & Wesson Sigma SW40F — 4" barrel only

⚠ Critical Fitment Note — Read Before Ordering: This recoil spring assembly fits the 4" barrel SW40F only. It is NOT compatible with the earlier 4.5" barrel SW40F models produced before 1999. In 1999, Smith & Wesson retired the 4.5" barrel and standardized all Sigma .40 models to the 4" barrel. If your SW40F has a 4.5" barrel, this assembly will not fit correctly. Measure your barrel before ordering.

Signs You Need a New Recoil Spring Assembly

• Failure to return to battery after firing
• Feeding or ejection malfunctions
• Noticeably increased felt recoil
• Visible wear, kinking, or corrosion on the spring
• High round count — recoil springs are wear items and should be replaced periodically

Important Notes

• This listing is for the recoil spring assembly only. The barrel, slide, frame, and all other parts are sold separately.
• Professional gunsmith installation recommended for proper fit and function.