Rival Arms RA20P001A Precision Drop-In 9mm Barrel for Sig P365 - 3.10" Black PVD, 4340H Steel

If you're serious about accuracy with your Sig P365, a Rival Arms precision drop-in 9mm barrel for Sig P365 is a straightforward way to upgrade your everyday carry or compact range gun without a gunsmith visit. This 3.10" barrel swaps directly into your P365 and comes CNC-machined from 4340H steel—a material choice that resists corrosion and handles the demands of regular shooting. The black PVD coating protects against wear while maintaining that clean, professional look. Whether you're fine-tuning groups at the range or just want a match-grade replacement, a quality barrel is one of the most direct paths to tighter accuracy.

Rival Arms holds each barrel to individual hand inspection before it ships, a detail that matters when you're trusting a component with your carry gun or match rifle. The target-crowned muzzle and 1:10 twist with 6 groove rifling are spec'd for reliable 9mm ballistics. There's no complicated installation—drop it in and you're running. The precision-polished finish and premium PVD treatment mean this barrel is built to last through years of carry or range time without unnecessary maintenance.

For P365 owners who want a direct accuracy upgrade without a trip to a gunsmith, or shooters looking for a spare barrel that performs like custom work, this Rival Arms barrel hits the mark. It's the kind of upgrade that feels professional and purposeful—exactly what you'd expect from a precision component.

Key Features

• Drop-in design requires no gunsmith installation
• CNC-machined from 4340H steel billet for strength and corrosion resistance
• Black PVD coating provides durable protection against wear
• 1:10 twist, 6 groove rifling optimized for 9mm
• Target crowned muzzle supports reliable accuracy
• Each barrel individually hand inspected
• Precision-polished finish

Specifications

Frequently Asked Questions

Will this barrel fit my Sig P365?

Yes. This Rival Arms precision drop-in 9mm barrel is designed specifically for the Sig P365 and requires no gunsmith work—just swap it in.

What material is the barrel made from?

The barrel is CNC-machined from 4340H steel, a high-strength alloy that resists corrosion and is built to handle regular shooting without unnecessary maintenance.

Do I need a gunsmith to install this barrel?

No. This is a drop-in design, so you can install it yourself without gunsmith tools or expertise.

What does the PVD coating do?

The black PVD coating creates a durable barrier against wear, helping the barrel stay protected through carry or range use while maintaining its appearance.