SIG SAUER P320 M17 9mm Recoil Spring Assembly

SIG SAUER P320 M17 Commercial 9mm Recoil Spring Assembly

This SIG SAUER recoil spring assembly is a factory-replacement component for the commercial P320-M17 in 9mm Luger. It is identified by manufacturer part number 8900190 and UPC 798681626397. The complete assembly is supplied as a single replacement unit with a black finish and steel construction.

The recoil spring assembly controls slide movement during the firing cycle. It compresses as the slide travels rearward, then supplies the force that helps return the slide forward, chamber the next cartridge, and place the pistol back into battery. Using the correct spring assembly is important because P320-family pistols use different recoil systems according to slide length, barrel configuration, and caliber.

Designed for the Commercial P320-M17

This part is specifically listed for the commercial P320-M17 chambered in 9mm Luger. It is not a universal recoil assembly for every P320 variant. Compact, Carry, XCompact, M18, and caliber-conversion configurations may require a different assembly even when they share the broader P320 name. Confirm the pistol model, slide length, caliber, and existing part before ordering.

Product Features

• Factory SIG SAUER replacement recoil spring assembly
• For the commercial P320-M17 9mm pistol
• Complete captured assembly for straightforward replacement
• Steel construction
• Black finish
• Exact manufacturer part number 8900190
• Exact UPC 798681626397

Specifications

• Manufacturer: SIG SAUER
• Product: P320 M17 Commercial Recoil Spring Assembly
• Manufacturer part number: 8900190
• UPC: 798681626397
• Platform: P320
• Intended model: Commercial P320-M17
• Caliber: 9mm Luger
• Material: Steel
• Color: Black
• Quantity: One assembly

Inspection and Replacement

Recoil springs are wear components and should be inspected as part of routine maintenance. Replacement may be appropriate if the assembly is damaged, distorted, binding, heavily worn, or due for service under the manufacturer’s maintenance guidance. Malfunctions can have several causes, including ammunition, magazines, lubrication, extractor condition, and other components; replacing the spring assembly should not substitute for a complete diagnosis when a pistol operates abnormally.

Installation and Safety

Unload the firearm completely before disassembly. Remove the magazine, lock the slide open, and visually and physically verify an empty chamber. Follow the current SIG SAUER P320-M17 owner’s or armorer instructions and keep the assembly oriented correctly during installation. After reassembly, perform every prescribed unloaded function check before returning the pistol to service. If fitment is uncertain, the slide does not cycle normally, or the pistol fails any safety check, stop and consult SIG SAUER or a qualified armorer.