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Rival Arms
The Rival Arms Spiral Fluted Stainless Steel Barrel for Sig P365 9mm Luger is a precision replacement barrel engineered for shooters who want to upgrade their compact carry platform. Built from stainless steel with a distinctive spiral flute pattern, this barrel combines functional design with a refined aesthetic—perfect for those running a P365 as a primary defensive firearm or backup. The 1/2"-28 thread configuration allows compatibility with standard suppressors and muzzle devices, opening up your options for configuration and performance tuning.
Rival Arms has earned credibility in the custom 1911 and compact pistol community for attention to detail, and this barrel reflects that same commitment. A quality replacement barrel can improve reliability, extend component life, and give you a platform for experimenting with ammunition, sight setups, and accessories on a proven defensive platform. Whether you're fine-tuning your carry gun or building a dedicated range/duty variant, a dedicated barrel lets you maintain your primary setup while keeping downtime minimal.
Installation and function should always be verified by someone competent with firearms—if you're not comfortable fitting a barrel yourself, a qualified gunsmith is the safer route. Once in place, this barrel is ready to run with your existing P365 frame and slide.
| Caliber | 9mm Luger |
| Firearm Model | Sig P365 |
| Material | Stainless Steel |
| Thread Pitch | 1/2"-28 |
| Surface Finish | Spiral Fluted |
Yes—this barrel is designed specifically for the Sig P365 9mm Luger platform. Proper installation and function verification are recommended before use.
Yes. The 1/2"-28 thread pitch is the standard suppressor mounting thread for 9mm pistols, so this barrel is compatible with any suppressor or muzzle device designed for that specification.
The Rival Arms barrel is constructed from stainless steel, which resists corrosion and provides durability for long-term carry or duty use.
Rival Arms
The Rival Arms Spiral Fluted Stainless Steel Barrel for Sig P365 9mm Luger is a precision replacement barrel engineered for shooters who want to upgrade their compact carry platform. Built from stainless steel with a distinctive spiral flute pattern, this barrel combines functional design with a refined aesthetic—perfect for those running a P365 as a primary defensive firearm or backup. The 1/2"-28 thread configuration allows compatibility with standard suppressors and muzzle devices, opening up your options for configuration and performance tuning.
Rival Arms has earned credibility in the custom 1911 and compact pistol community for attention to detail, and this barrel reflects that same commitment. A quality replacement barrel can improve reliability, extend component life, and give you a platform for experimenting with ammunition, sight setups, and accessories on a proven defensive platform. Whether you're fine-tuning your carry gun or building a dedicated range/duty variant, a dedicated barrel lets you maintain your primary setup while keeping downtime minimal.
Installation and function should always be verified by someone competent with firearms—if you're not comfortable fitting a barrel yourself, a qualified gunsmith is the safer route. Once in place, this barrel is ready to run with your existing P365 frame and slide.
| Caliber | 9mm Luger |
| Firearm Model | Sig P365 |
| Material | Stainless Steel |
| Thread Pitch | 1/2"-28 |
| Surface Finish | Spiral Fluted |
Yes—this barrel is designed specifically for the Sig P365 9mm Luger platform. Proper installation and function verification are recommended before use.
Yes. The 1/2"-28 thread pitch is the standard suppressor mounting thread for 9mm pistols, so this barrel is compatible with any suppressor or muzzle device designed for that specification.
The Rival Arms barrel is constructed from stainless steel, which resists corrosion and provides durability for long-term carry or duty use.
