Sig Sauer Factory P320 Full Size 4.7" 9mm Barrel with LCI - BBL-MOD-F-9

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Sig Sauer Factory P320 Full Size 4.7 9mm Barrel BBL-MOD-F-9 LCI UPC 798681538324

Product Description

The Sig Sauer Factory P320 Full Size 4.7" 9mm Barrel (BBL-MOD-F-9) is an authentic OEM replacement barrel engineered specifically for full-size Sig Sauer P320 9mm handguns. Precision-machined to exact factory specifications, this 4.7-inch carbon steel barrel delivers match-grade lockup, consistent point-of-impact, and long-term mechanical reliability across high-volume firing schedules.

Finished in a durable matte black nitrided coating, the BBL-MOD-F-9 resists severe barrel wear, carbon pitting, and chemical corrosion. This specific variant features the integrated Loaded Chamber Indicator (LCI) notch on the rear hood, allowing visual and tactile confirmation of a loaded chamber when paired with LCI-equipped P320 slide assemblies.

Whether replacing a high-round-count factory barrel or completing a custom Sig Sauer P320 build from a standalone full-size slide, this original manufacturer component ensures optimal lockup tolerances, maximum reliability, and true drop-in compatibility.

Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Fits Sig Sauer P320 Full-Size slides (4.7" barrel length) configured for 9mm Luger. Features a Loaded Chamber Indicator (LCI) cutout on the barrel hood. (Compatible with slides with or without an LCI optic-cut mechanism, though non-LCI slides will not utilize the top notch feature).

1. Perform a complete firearm safety check: drop the magazine, lock the slide rearward, and visually inspect the chamber to verify zero live rounds are present.
2. Field strip the Sig P320 by locking the slide, rotating the takedown lever downward, and removing the slide assembly from the frame.
3. Remove the recoil spring assembly and extract the existing factory barrel from the slide cavity.
4. Clean factory packing oil or carbon debris from the feed ramp and locking lug channels of the new Sig Sauer BBL-MOD-F-9 barrel.
5. Drop the new barrel into the slide, ensuring the barrel hood drops flush into the ejection port cutout.
6. Reinstall recoil spring assembly, attach slide to grip module, and perform dry-fire function checks prior to live-fire zeroing.

Key Features

• Factory OEM Precision: Manufactured directly by Sig Sauer to strict original factory tolerances for seamless drop-in fitment.
• Loaded Chamber Indicator (LCI) Cutout: Includes the top-hood LCI notch for visual status verification on LCI-compatible slides.
• 4140 Carbon Steel Construction: Precision-machined from high-grade steel for barrel longevity and inherent match accuracy.
• Durable Nitride Finish: Slick matte black surface treatment provides heat resistance, reduced friction, and superior corrosion protection.
• 4.7" Full-Size Profile: Standard factory length for P320 Full-Size slides, delivering optimal bullet velocity and sight radius.
• Made in the USA: Proudly manufactured in the United States backed by Sig Sauer factory quality control.

Product Specifications

• Brand: Sig Sauer
• Model/Series: P320 Full Size OEM Barrel
• MPN / SKU: BBL-MOD-F-9
• UPC: 798681538324
• Caliber: 9mm NATO / 9x19mm Luger
• Barrel Length: 4.7 in
• Platform Compatibility: Sig Sauer P320 Full Size (9mm)
• Loaded Chamber Indicator (LCI): Yes
• Material: Carbon Steel
• Finish / Color: Matte Black Nitride
• Weight: 4.2 oz
• Country of Origin: USA