The Faxon Duty Series Threaded Barrel for Sig Sauer P320 Full Size (Part Number 320A910NFNOQ-T) is a high-performance, precision-machined upgrade designed to give P320 Full Size owners suppressor and compensator capability. Manufactured by Faxon Firearms, this 9mm threaded barrel is part of the respected Duty Series and is specifically engineered to fit the Sig Sauer P320 Full Size model. It provides a reliable, drop-in solution that maintains the accuracy and dependability of the original firearm while adding the versatility of a threaded muzzle.
Designed Exclusively for the P320 Full Size
This Faxon threaded barrel is purpose-built for the Sig Sauer P320 Full Size pistol. It features the correct length, locking lug geometry, and feed ramp profile to ensure proper fit and function in the Full Size frame. Unlike universal barrels, this model is optimized specifically for the longer slide and frame of the P320 Full Size, delivering consistent reliability and accuracy without the need for modifications.
The Faxon Duty Series Threaded Barrel transforms your Sig P320 Full Size into a suppressor-ready platform while preserving factory-level performance and reliability.
Threaded Muzzle for Suppressors and Compensators
The barrel comes with a 1/2x28 threaded muzzle, the industry standard for 9mm suppressors and compensators. This threading allows users to easily attach a wide range of aftermarket muzzle devices, including popular suppressors from SilencerCo, Rugged, Dead Air, Q, and more. Whether you want to reduce recoil, lower noise signature, or improve follow-up shot speed, this threaded barrel significantly expands the customization options for your P320 Full Size.
Premium 416R Stainless Steel Construction
Faxon manufactures this barrel from high-quality 416R stainless steel, selected for its excellent strength, corrosion resistance, and long-term durability. Each barrel is precision CNC machined to tight tolerances to ensure consistent accuracy and reliable feeding. The Duty Series barrels undergo strict quality control to deliver performance that meets or exceeds OEM specifications while adding the threaded muzzle feature that many shooters desire.
Maintains Accuracy and Reliability
Despite being a threaded upgrade, the Faxon Duty Series barrel is engineered to maintain the excellent accuracy and reliability of the P320 Full Size. The precision rifling and consistent bore dimensions help deliver tight shot groups at the range. The barrel is designed to function reliably with a wide variety of 9mm ammunition, including standard pressure and +P loads, making it suitable for defensive use, competition, and recreational shooting.
Key Features of the Faxon Duty Series P320 Full Size Threaded Barrel
- Threaded Muzzle – 1/2x28 threading for suppressors and compensators
- Compatible with P320 Full Size – Direct drop-in fit
- 9mm Caliber – Optimized for standard 9mm ammunition
- 416R Stainless Steel – Excellent strength and corrosion resistance
- Precision Machined – Tight tolerances for accuracy and reliability
- Matte Black Finish – Durable and non-reflective
- Part Number 320A910NFNOQ-T – Official Faxon part number
- UPC 810209950125 – Authentic Faxon product
Why Choose the Faxon Duty Series Threaded Barrel?
The Faxon Duty Series Threaded Barrel for the Sig P320 Full Size offers an excellent balance of quality, performance, and value. Faxon is known for producing barrels that function reliably without the feeding or accuracy issues sometimes seen with lower-quality aftermarket options. This barrel allows P320 Full Size owners to add suppressor capability while maintaining the proven reliability of the platform. Whether you’re a competitive shooter, a suppressor enthusiast, or simply want more versatility from your P320, this threaded barrel is a smart and practical upgrade that enhances the capabilities of one of the most popular full-size striker-fired pistols on the market.
Technical Specifications
| Brand | Faxon Firearms |
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| Series | Duty Series |
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| Part Number | 320A910NFNOQ-T |
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| Compatibility | Sig Sauer P320 Full Size |
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| Caliber | 9mm Luger |
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| Threading | 1/2x28 |
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| Material | 416R Stainless Steel |
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| Finish | Matte Black |
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| UPC | 810209950125 |
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Ideal Applications
The Faxon Duty Series Threaded Barrel is an excellent choice for Sig P320 Full Size owners who want to add suppressor or compensator capability to their pistol. It is ideal for shooters who use their P320 for home defense, suppressed carry, competition shooting, or range training. The barrel maintains the full-size ergonomics and capacity of the P320 Full Size while significantly expanding its functionality, making it suitable for both duty use and recreational shooting where noise reduction or recoil management is desired.
Upgrade your Sig Sauer P320 Full Size with the Faxon Duty Series Threaded Barrel. This precision-machined 9mm threaded barrel allows easy installation of suppressors and compensators while maintaining factory reliability. Part Number 320A910NFNOQ-T. UPC 810209950125.
