True Precision Barrel P365 9mm Black Nitride Threaded Barrel

The True Precision Barrel P365 9mm Black Nitride Threaded Barrel is a direct-fit replacement barrel engineered for the SIG Sauer P365 subcompact platform. This threaded barrel extends the muzzle with M13.5x1 LH threading, enabling suppressor compatibility while maintaining the compact profile that defines the P365's appeal for concealed carry and backup weapon roles. The black nitride finish provides corrosion resistance in high-moisture environments—critical for operators working coastal, maritime, or humid climates where standard steel rapidly oxidizes.

True Precision manufactures to tight tolerances, ensuring that headspace, chamber geometry, and barrel-to-slide fit meet or exceed OEM specifications. The nitride coating—a thermochemical process that diffuses nitrogen into the steel surface—delivers superior wear resistance and hardness compared to standard parkerize, making this barrel suitable for high-round-count training cycles and duty carry. Threading adds approximately 0.5–0.75 inches to overall length, a trade-off worth accepting for shooters prioritizing hearing protection or velocity gains in a sound-suppressed configuration. The 9mm cartridge's modest recoil impulse and high magazine capacity (P365 standard ten-round, or extended thirteen-round compatibility) make this platform ideal for civilian self-defense, law enforcement backup, or personal protection in confined spaces.

This barrel replacement appeals to serious P365 owners seeking suppressor versatility without sacrificing reliability or ergonomics. Threaded P365 9mm barrels are sought by shooters building .22 LR conversion kits, suppressor-ready duty secondaries, or compact pistols optimized for sound signature reduction in training or defensive scenarios. Installation requires field-stripping the host pistol and swapping the barrel—no gunsmithing required. Compatibility is absolute with genuine P365 frames and P365 XL models, though verify your specific P365 generation prior to purchase.