Sig Sauer BBLMODC357 P320 3.90" Black Nitron Barrel for P320 Carry/Compact (No Loaded Chamber Indicator)

If you're running a Sig Sauer P320 Carry or Compact and need a quality replacement or backup barrel, the Sig Sauer BBLMODC357 is a factory OEM option built to the same standards as your pistol. This 3.90" barrel is finished in Sig's durable Nitron coating—a hard-anodized surface that resists corrosion and wear—and is chambered for .357 Sig, a popular intermediate cartridge known for solid velocity and terminal performance in the P320 platform. Whether you're swapping barrels for maintenance, setting up dedicated ammunition testing, or just keeping a spare on hand, this is a straightforward upgrade from Sig's own parts bin.

The barrel is machined to OEM specs and drops into your Carry or Compact frame without fitting issues—no gunsmithing required. The Nitron finish is applied across all surfaces for consistent protection, and the barrel is compatible with standard P320 Carry/Compact slide assemblies. Note that this variant does not include a loaded chamber indicator, so if your current setup has one, this swap will change that feature.

Sig Sauer barrels are a reliable choice for shooters who want factory-backed parts and aren't chasing aftermarket options. If you shoot .357 Sig, reload, or just want to keep your P320 running strong, this barrel is a practical addition to your parts inventory.

Key Features

• Factory Sig Sauer OEM barrel for P320 Carry and Compact frames
• Chambered in .357 Sig
• 3.90" barrel length, match-grade tolerances
• Black Nitron finish for corrosion resistance and durability
• No loaded chamber indicator
• Direct drop-in installation on compatible P320 slides

Specifications

Frequently Asked Questions

Will this barrel fit my P320 Carry or Compact?

Yes. The BBLMODC357 is engineered as an OEM replacement for P320 Carry and Compact models and installs without fitting or modification.

What caliber is this barrel?

This barrel is chambered in .357 Sig, a centerfire round popular for its velocity and performance in the P320 platform.

Does this barrel have a loaded chamber indicator?

No. This variant does not include a loaded chamber indicator. If your current slide has one, switching to this barrel will remove that feature.

Is this a Sig Sauer factory part?

Yes. This is an OEM barrel manufactured by Sig Sauer to their factory specifications and tolerances.