P365 3'' Bbl 9Mm Non-Threaded Stainless

The Zaffiri Precision P365 3" barrel in 9mm non-threaded stainless gives your Sig Sauer P365 a genuine accuracy upgrade without the hassle. This isn't a marginal tweak—it's a match-grade drop-in replacement built to tighter tolerances than factory Sig barrels, made right here in the USA from 416R stainless steel. If you're running a P365 for concealed carry, range work, or duty and want better shot-to-shot consistency, a quality aftermarket barrel pays dividends, especially in a gun you trust with your life.

The non-threaded design keeps a clean, flush profile—no extra length, no muzzle threads to worry about. The 3" length is the spec-correct dimension for P365 compatibility, and the drop-in fit means no gunsmith visit required. Zaffiri's conventional rifling with a broach-cut pattern and polished chamber handles lead, plated, and jacketed ammunition without fussiness. The design includes a fully supported chamber, improved feed ramp geometry, and an oversized lock-up area for reliability and longevity. Everything is stress-relieved and heat-treated to RC 40–42 hardness, and each barrel gets a target crown to support precision.

The stainless finish is naturally corrosion-resistant and low-maintenance, befitting a carry gun that lives in a holster or bag. You'll notice the signature oversized ZP logo machined into the barrel—a small detail that announces the upgrade to those who know. This is the kind of part that doesn't shout about itself; it just performs, shot after shot, without drama.

Key Features

• Drop-in fit for Sig Sauer P365—no gunsmithing required
• Match-grade precision manufacturing for superior accuracy
• 416R stainless steel construction, stress-relieved and hardened to RC 40–42
• Non-threaded design with flush crown and clean profile
• Fully supported chamber and improved feed ramp for reliable feeding
• Polished chamber and bore for reliable performance with all bullet types
• Broach-cut conventional rifling, 6-groove, 1/10" LH twist
• Made in the USA

Specifications

Frequently Asked Questions

Will this barrel fit my Sig Sauer P365 without modification?

Yes. This is a drop-in barrel designed for P365 compatibility. No gunsmithing or fitting is required; it functions as a direct replacement for the factory barrel.

What's the difference between threaded and non-threaded, and which should I choose?

This is the non-threaded version with a flush crown. Choose non-threaded if you don't plan to use a suppressor or muzzle device. The threaded version is available separately if you need that capability.

Does this barrel come with any installation tools or instructions?

The facts provided do not specify what tools or documentation are included. Contact us for details on what ships with your barrel.

What kinds of ammunition does this barrel work with?

The polished chamber and bore design is optimized to reliably cycle and feed lead, plated, and jacketed 9mm ammunition within SAAMI specifications.