The SIG Sauer Slide Completion Kit (brand part no. 8900979) supplies every factory replacement corrosion-resistant part needed to complete a P320 slide chambered in 9mm or .357 SIG, minus the barrel, sights, and recoil assembly. The kit includes the extractor, extractor pin, extractor spring, extractor spring pin, striker group assembly, and rear slide cap. Because installation requires disassembling the firearm beyond a field-stripped condition, SIG Sauer requires that only certified SIG Sauer armorers install these parts kits — improper installation can result in malfunction, serious injury, or death, and any damage caused by incorrect installation is not covered by the firearm’s warranty.

Key Specifications

• Completes a P320 slide in 9mm or .357 SIG (barrel, sights, and recoil assembly not included).
• Genuine factory corrosion-resistant replacement parts.
• Includes extractor, extractor pin, extractor spring, and extractor spring pin.
• Includes the striker group assembly.
• Includes the rear slide cap.
• Requires certified SIG Sauer armorer installation — disassembly goes beyond a field-stripped condition.

Frequently Asked Questions

Can I install this myself? SIG Sauer requires that only a certified SIG Sauer armorer install this kit. Installation requires disassembly beyond a field-stripped condition, and improper installation can result in malfunction, serious injury, or death.

What’s included in the kit? Extractor, extractor pin, extractor spring, extractor spring pin, striker group assembly, and rear slide cap.

Is the barrel included? No, this kit completes the slide minus the barrel, sights, and recoil assembly.

Buy the SIG Sauer Slide Completion Kit for P320

Get genuine factory parts for your P320 slide build. Order it from our SIG Sauer lineup, part of our small handgun parts, at our Lubbock, Texas gun shop for fast, direct shipping.