True Precision SIG P365 Threaded Barrel 9mm 3.1in 1/2×28

This True Precision drop-in barrel is engineered for SIG Sauer P365 3.1″ models, including the P365 SAS and P365X. It is a match-grade stainless replacement intended to improve accuracy and feeding reliability while providing a threaded muzzle for accessory attachment. The barrel uses proprietary broach-cut rifling and an improved feed ramp to support a wide range of defensive and practice ammunition. Made in the U.S.A., it pairs precision machining with features aimed at reliable everyday performance.

Key Specifications

• The barrel is chambered for 9mm.
• Designed to fit SIG P365 3.1 inch models (including P365 SAS and P365X).
• The barrel length measures 3.1 inches.
• Constructed from 416R stainless billet with a stainless finish.
• Features broach-cut 6-groove rifling for match-grade performance.
• The twist rate is 1:10.
• The muzzle is threaded with 1/2×28 threads and ships with a Viton integral O-ring thread protector.
• Finished with an 11° target crown for consistent muzzle alignment.
• Includes an improved and widened feed ramp to enhance feeding of hollow-point and defensive ammunition.

Whether you are tightening up groups for range work or installing a threaded option for compatible muzzle accessories, this True Precision barrel delivers match-oriented construction and practical features for carry and everyday use. Its combination of broach-cut rifling, precision crown, and an improved feed ramp makes it a straightforward upgrade for P365 3.1″ owners who prioritize reliable function and refined accuracy.