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Sig Sauer P320 XCompact/Subcompact 4.3″ Threaded Barrel 9mm

UPC: 798681650019

$191.99

5 in stock

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Description

This is a genuine Sig Sauer factory replacement barrel built for the P320 XCompact and Subcompact platform. At 4.3 inches long, it replaces your standard 3.6-inch barrel and comes threaded with 1/2-28 RH specifications, making it compatible with standard suppressor and muzzle device platforms. The Nitron finish provides solid corrosion resistance and a subdued appearance that works whether you're building a range gun or a carry setup. It ships with a thread protector cap to keep the muzzle threads clean when a suppressor isn't mounted.

Easy Drop-In Installation

This barrel drops right in without any gunsmithing required. Simply unload your firearm, separate the slide from the grip module, and swap out your existing barrel. The compatibility is built in since this is an official Sig Sauer part designed specifically for your platform.

Real-World Suppressor Platform

The extra length of this threaded barrel serves a purpose beyond just accommodating threads. That additional length helps manage the dynamics of using a suppressor with the P320s shorter slide and barrel, ensuring reliable function and proper support for suppressor or muzzle device mounting. The 1/2-28 thread pitch is the industry standard for 9mm handgun suppressors, giving you options across multiple brands and models.

Loaded Chamber Indicator Compatible

This barrel is cut to work with P320 XCompact and Subcompact slides that have the loaded chamber indicator (LCI). That notch on the slide that shows a round in the chamber will function properly with this barrel, so no modification is needed if your pistol has LCI.

Key Specifications

  • Manufacturer: Sig Sauer
  • Manufacturer Part Number: 8900568
  • UPC: 798681650019
  • Caliber: 9mm Luger
  • Barrel Length: 4.3 inches
  • Thread Pitch: 1/2-28 RH
  • Finish: Nitron (Black)
  • Compatibility: P320 XCompact/Subcompact with LCI, or any P320 designed for 3.6" barrel
  • Installation Type: Drop-in, no gunsmithing required
  • Material: Steel

What’s Included

  • Sig Sauer P320 4.3" threaded barrel (Nitron finish)
  • Thread protector cap

Frequently Asked Questions

Will this threaded barrel work with my P320 slide?

This barrel is designed for P320 XCompact and Subcompact models with loaded chamber indicators. It also works with any P320 that was originally designed to function with a 3.6-inch barrel. If you have a full-size, compact, or X-series P320 with a different barrel platform, you'll need a different threaded barrel length.

What suppressors can I use with the 1/2-28 threads?

The 1/2-28 thread pitch is the standard for 9mm suppressors and muzzle devices across most major manufacturers. You can use any suppressor or compensator threaded in 1/2-28 format. Just verify your specific device's thread pitch before purchase to ensure compatibility.

Do I need a gunsmith to install this barrel?

No, this barrel is a factory drop-in replacement. Simply ensure your firearm is unloaded, separate the slide from the grip module, and swap out the old barrel for the new one. No modifications or special tools are required.

Why is this barrel longer than the standard P320 barrel?

The extra length accommodates the suppressor's integration with the shorter P320 slide and barrel. This helps manage recoil dynamics and ensures the suppressor properly supports the slide cycling when attached. The length also provides adequate thread engagement for secure muzzle device mounting.

Additional information

UPC

798681650019

Manufacturer

Manufacturer Part Number

8900568

Barrel Length

4.3''

Length

4.30"

Model

Style

Threaded

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