The True Precision 9MM Black Nitride Barrel for Sig P320 Compact is a precision-engineered drop-in replacement built for shooters who demand better accuracy and reliability than factory parts deliver. Designed specifically for the P320 Compact, X-Carry (with possible minor fitting on some X-Carry variants), and M18 platforms, this 3.87-inch barrel combines advanced manufacturing with competitive-grade performance—all made right here in the USA from certified 416R stainless steel.

What sets True Precision apart is the attention to detail: a proprietary broach-cut design with 6-groove rifling optimized for accuracy, a 1/10 right-hand twist that handles all ammunition types safely—including cast lead rounds—and a SAAMI-spec chamber that plays well with P320 variants. The black nitride finish delivers durability without the theatrical coating; this is working metal. True Precision engineered improved fits over OEM barrels with added chamfers and refined radius cuts that mean tighter lockup and better consistency shot to shot. The drop-in design keeps installation straightforward, though the M18's loaded chamber indicator cut is retained for cross-platform swapping among P320 variants.

Choose your configuration: non-threaded barrels come with an 11-degree competition-style target crown, while threaded versions feature 1/2x28 threads paired with an included high-heat Viton O-ring lock thread protector so you're ready to attach a suppressor or brake right out of the box. This is an upgrade that respects both the shooter and the gun—no compromises on the critical details.

Key Features

• Drop-in design for easy installation on Sig P320 Compact, X-Carry, and M18
• Proprietary broach-cut rifling engineered for accuracy improvement
• 6-groove rifling compatible with all ammunition types, including cast lead
• 1/10 right-hand twist rate
• SAAMI-spec chamber for safe, reliable feeding and extraction
• Improved OEM fit with enhanced chamfers and radius cuts
• 100% USA designed, manufactured, and sourced from certified 416R stainless steel
• Black nitride finish for durability and corrosion resistance
• Loaded chamber indicator cut retained for M18 interchangeability
• 11-degree competition-style target crown on non-threaded versions
• 1/2x28 threaded option available with included Viton O-ring lock thread protector

Specifications

Caliber	9mm
Barrel Length	3.87 inches (breechface to muzzle)
Twist Rate	1/10 right-hand
Rifling	6-groove proprietary broach cut
Material	Certified 416R stainless steel
Finish	Black nitride
Compatibility	Sig P320 Compact, X-Carry (minor fitting may be required on some models), M18 (will not fit X-Compact)
Crown Style	11-degree competition-style target crown (non-threaded)
Thread Options	1/2x28 (threaded versions include Viton O-ring lock thread protector)
Chamber	SAAMI spec
Installation	Drop-in design
Origin	100% designed and manufactured in the USA

Frequently Asked Questions

Will this barrel fit my Sig P320 X-Carry?

Yes, the True Precision barrel is compatible with the P320 X-Carry, though minor fitting may be required on some X-Carry models. It will not fit the X-Compact variant.

Can I use cast lead ammunition with this barrel?

Absolutely. The 6-groove broach-cut rifling is specifically designed to safely handle all ammunition types, including cast lead rounds, without risk of leading buildup in the bore.

What's the difference between the threaded and non-threaded versions?

The non-threaded version features an 11-degree competition-style target crown. Threaded versions come with 1/2x28 threads and include a Viton high-heat integral O-ring lock thread protector, so you can immediately attach a suppressor, muzzle brake, or flash hider.

Do I need any special tools to install this barrel?

The drop-in design keeps installation straightforward. Minor fitting may be required on some X-Carry models, but this is not a gunsmithing job—basic hand tools will get the job done.