This True Precision drop-in barrel is produced for the Sig Sauer P365 family of pistols configured for the 3.1″ slide models, including P365, P365 SAS, and P365X 3.1″ 9mm variants. It is machined from 416R stainless steel and finished in black nitride. The barrel includes 1/2×28 threads and a Viton high-heat integral O-ring lock thread protector for threaded use.
Key Specifications
- Fits Sig P365 / P365 SAS / P365X (3.1″) models.
- Chambered for 9mm (9mm Luger).
- Constructed from 416R stainless billet.
- Finished with black nitride.
- Barrel is threaded 1/2×28 for muzzle accessories.
- Includes a Viton high-heat integral O-ring lock thread protector.
- Rifling is broach cut, 6-groove.
- Rate of twist is 1:10.
- Features an improved and widened feed ramp relative to OEM dimensions.
- Manufactured in the U.S.A.
The True Precision threaded barrel provides a direct, drop-in upgrade for owners seeking a threaded 3.1″ option for Sig P365-series pistols. Its machined 416R stainless construction, broach-cut rifling, and nitride finish are specified for durability and consistent function in everyday carry and duty applications. The integrated thread protector and widened feed ramp support reliable feeding and threaded use without additional modification to the slide or frame.
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