The Rival Arms RA20P001E is a precision match-grade drop-in barrel designed for the SIG Sauer P365 and chambered for 9mm Luger. CNC-machined from 4340H steel billet and finished with a gold PVD coating, this fluted 3.10″ barrel is engineered for consistency and durable surface protection. It features a 1:10 twist with six-groove rifling and a target-crowned muzzle for a clean exit. The barrel installs without gunsmithing and is backed by a limited lifetime warranty.
Key Specifications
- Chambering is 9mm Luger.
- Barrel length is 3.10 inches.
- Rate of twist is 1:10 with six-groove rifling.
- Material is 4340H steel billet.
- Finish is Gold PVD.
- Barrel type is a drop-in replacement.
- Muzzle profile is target crowned.
- Designed to fit SIG P365.
- Weight as provided is 0.235 (value provided by manufacturer).
- Warranty coverage is a limited lifetime warranty.
Engineered for straightforward installation and consistent on‑target performance, this Rival Arms match-grade barrel brings precision machining and a durable PVD finish to compact 9mm platforms. Its combination of materials, rifling, and crown make it a practical upgrade for shooters seeking improved mechanical quality and longevity from their SIG P365 barrel component.





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