True Precision121687049
True Precision 9mm Copper Barrel for Sig P365 (TP-P365B-XS)$180.49
Availability: In Stock
Current Stock: Out of stock
The True Precision TP-P365B-XC is a precision 9mm barrel built for shooters who demand accuracy and reliability from their SIG Sauer P365. This drop-in replacement barrel is engineered and manufactured entirely in the USA from 416R stainless steel, designed to fit the standard P365 3.1-inch frame, P365 SAS, and P365X models. Whether you're training, competing, or carrying for personal defense, a quality aftermarket barrel can tighten your groups and give you confidence in your carry gun's performance.
True Precision's proprietary broach cut rifling is the heart of this barrel's accuracy potential. The 6-groove design handles any ammunition type safely—including cast lead rounds—without the restrictions of traditional button-cut barrels. The 1/10 right-hand twist is optimized for 9mm ballistics and pairs with a deep target crown (on non-threaded versions) to support consistent shot placement. Installation is straightforward; this is a true drop-in design that requires no gunsmithing.
The threaded version includes a Viton O-ring lock thread protector to keep your threads clean and protected when running unsuppressed. Both versions feature a SAAMI-spec chamber for reliable feeding and extraction across factory and handloaded ammunition. At 3.62 inches from chamber to muzzle and just 2.3 ounces (without protector), the barrel maintains the P365's handling characteristics while delivering the precision you'd expect from a purpose-built component.
If you own a P365 and want to upgrade beyond stock, this True Precision barrel represents genuine American engineering focused on the shooter's mission—whether that's tighter groups at the range, smoother reliability in daily carry, or confidence that your defensive gun performs exactly as intended.
| Caliber | 9mm |
| Twist Rate | 1/10 RH |
| Rifling | 6-groove broach cut |
| Barrel Length (chamber to muzzle) | 3.62" |
| Weight (without thread protector) | 2.3 oz |
| Material | 416R stainless steel |
| Thread Option | Non-threaded or 1/2x28 (includes Viton O-ring protector) |
| Chamber | SAAMI spec |
| Fit | SIG Sauer P365, P365 SAS, P365X (not P365 XL) |
| Country of Origin | USA |
No. This barrel is designed for the standard P365 (3.1"), P365 SAS, and P365X models only. The 3.1-inch length will not fit the P365 XL, which uses a 3.7-inch frame.
This is a true drop-in design. No gunsmithing or special tools are required for installation on compatible P365 models.
Yes. The 6-groove broach cut design is safe for all ammunition types, including cast lead rounds, without the copper fouling concerns common to button-cut barrels.
The threaded 1/2x28 version includes a Viton high heat integral O-ring lock thread protector to protect your threads when running unsuppressed.
SKU: 167514686 • Width: 2.75in • Height: 1.25in • Depth: 6.75in • Weight: 4oz
Availability: In Stock
Current Stock: Out of stock
The True Precision TP-P365B-XC is a precision 9mm barrel built for shooters who demand accuracy and reliability from their SIG Sauer P365. This drop-in replacement barrel is engineered and manufactured entirely in the USA from 416R stainless steel, designed to fit the standard P365 3.1-inch frame, P365 SAS, and P365X models. Whether you're training, competing, or carrying for personal defense, a quality aftermarket barrel can tighten your groups and give you confidence in your carry gun's performance.
True Precision's proprietary broach cut rifling is the heart of this barrel's accuracy potential. The 6-groove design handles any ammunition type safely—including cast lead rounds—without the restrictions of traditional button-cut barrels. The 1/10 right-hand twist is optimized for 9mm ballistics and pairs with a deep target crown (on non-threaded versions) to support consistent shot placement. Installation is straightforward; this is a true drop-in design that requires no gunsmithing.
The threaded version includes a Viton O-ring lock thread protector to keep your threads clean and protected when running unsuppressed. Both versions feature a SAAMI-spec chamber for reliable feeding and extraction across factory and handloaded ammunition. At 3.62 inches from chamber to muzzle and just 2.3 ounces (without protector), the barrel maintains the P365's handling characteristics while delivering the precision you'd expect from a purpose-built component.
If you own a P365 and want to upgrade beyond stock, this True Precision barrel represents genuine American engineering focused on the shooter's mission—whether that's tighter groups at the range, smoother reliability in daily carry, or confidence that your defensive gun performs exactly as intended.
| Caliber | 9mm |
| Twist Rate | 1/10 RH |
| Rifling | 6-groove broach cut |
| Barrel Length (chamber to muzzle) | 3.62" |
| Weight (without thread protector) | 2.3 oz |
| Material | 416R stainless steel |
| Thread Option | Non-threaded or 1/2x28 (includes Viton O-ring protector) |
| Chamber | SAAMI spec |
| Fit | SIG Sauer P365, P365 SAS, P365X (not P365 XL) |
| Country of Origin | USA |
No. This barrel is designed for the standard P365 (3.1"), P365 SAS, and P365X models only. The 3.1-inch length will not fit the P365 XL, which uses a 3.7-inch frame.
This is a true drop-in design. No gunsmithing or special tools are required for installation on compatible P365 models.
Yes. The 6-groove broach cut design is safe for all ammunition types, including cast lead rounds, without the copper fouling concerns common to button-cut barrels.
The threaded 1/2x28 version includes a Viton high heat integral O-ring lock thread protector to protect your threads when running unsuppressed.
SKU: 167514686 • Width: 2.75in • Height: 1.25in • Depth: 6.75in • Weight: 4oz