
Availability: In Stock
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.
| 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 |
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.
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.
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.
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.




SKU: 115792816 • Width: 1in • Height: 6.5in • Depth: 2.5in • Weight: 0.06oz





Availability: In Stock
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.
| 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 |
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.
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.
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.
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.
SKU: 115792816 • Width: 1in • Height: 6.5in • Depth: 2.5in • Weight: 0.06oz



