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Faxon Firearms
The Faxon Duty threaded barrel for the SIG Sauer P320 Full Size in 9mm is a drop-in upgrade for shooters looking to add suppressor compatibility to their duty or carry pistol. Faxon barrels are known for precision machining and reliability in high-volume shooting applications, making this a practical choice if you're already running a suppressor or planning to. The threaded muzzle lets you mount a compatible suppressor directly without requiring an adapter or alternative slide.
This barrel is cut for the P320 Full Size frame and chamber, so fitment is straightforward—no gunsmithing required. It's designed to work within the existing P320 platform, maintaining the same ergonomics and controls you're used to. Whether you're setting up a duty rig, a range gun, or a host for subsonic 9mm rounds, a quality threaded barrel is a foundational upgrade that opens up suppression options.
As with any barrel swap, verify that your current ammunition, magazines, and any installed optics or accessories clear the new muzzle without issue. Faxon's reputation for attention to detail in manufacturing makes this a solid choice for serious shooters who want a reliable, precision-machined component.
| Brand | Faxon Firearms |
| Firearm Platform | SIG Sauer P320 Full Size |
| Caliber | 9mm |
| Barrel Type | Threaded |
No. This barrel is machined specifically for the P320 Full Size frame. Compact and Subcompact models use different dimensions and require their own dedicated barrels.
Yes. The threaded muzzle is designed for direct attachment of a compatible 9mm suppressor. Verify your suppressor's thread pitch and mounting interface before assembly.
No. This is a drop-in barrel designed for the P320 Full Size. Installation should not require any modifications to the slide or frame, though familiarity with field-stripping your pistol is recommended.
As a 9mm barrel, it will chamber standard 9mm ammunition. Test your preferred loads to ensure reliable function with your specific P320 setup, particularly if running subsonic or specialized rounds.
Faxon Firearms
The Faxon Duty threaded barrel for the SIG Sauer P320 Full Size in 9mm is a drop-in upgrade for shooters looking to add suppressor compatibility to their duty or carry pistol. Faxon barrels are known for precision machining and reliability in high-volume shooting applications, making this a practical choice if you're already running a suppressor or planning to. The threaded muzzle lets you mount a compatible suppressor directly without requiring an adapter or alternative slide.
This barrel is cut for the P320 Full Size frame and chamber, so fitment is straightforward—no gunsmithing required. It's designed to work within the existing P320 platform, maintaining the same ergonomics and controls you're used to. Whether you're setting up a duty rig, a range gun, or a host for subsonic 9mm rounds, a quality threaded barrel is a foundational upgrade that opens up suppression options.
As with any barrel swap, verify that your current ammunition, magazines, and any installed optics or accessories clear the new muzzle without issue. Faxon's reputation for attention to detail in manufacturing makes this a solid choice for serious shooters who want a reliable, precision-machined component.
| Brand | Faxon Firearms |
| Firearm Platform | SIG Sauer P320 Full Size |
| Caliber | 9mm |
| Barrel Type | Threaded |
No. This barrel is machined specifically for the P320 Full Size frame. Compact and Subcompact models use different dimensions and require their own dedicated barrels.
Yes. The threaded muzzle is designed for direct attachment of a compatible 9mm suppressor. Verify your suppressor's thread pitch and mounting interface before assembly.
No. This is a drop-in barrel designed for the P320 Full Size. Installation should not require any modifications to the slide or frame, though familiarity with field-stripping your pistol is recommended.
As a 9mm barrel, it will chamber standard 9mm ammunition. Test your preferred loads to ensure reliable function with your specific P320 setup, particularly if running subsonic or specialized rounds.
