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Zaffiri Precision Threaded Barrel for Sig P365 – 3.77" Stainless
Take your Sig Sauer P365 to the next level with the Zaffiri Precision 3.77" 9mm Threaded Barrel—crafted for shooters who demand match-grade accuracy and suppressor-ready performance.
Made in the USA from 416R stainless steel, this high-performance upgrade features conventional rifling, a 1/2x28 threaded muzzle, and a drop-in fit that requires no gunsmithing. It’s precision-machined to ensure tight lockup and exceptional accuracy, whether you're at the range or carrying daily.
With a polished chamber and bore, this barrel handles lead, plated, and jacketed rounds with ease. The extended length and clean stainless finish add both visual appeal and added performance, giving you a tactical edge without sacrificing reliability.
This is more than a replacement—it’s a serious upgrade for your P365 platform.
🔧 Product Features
- Fits: Sig Sauer P365 (not compatible with XL or XMACRO models)
- Caliber: 9mm
- Threaded: Yes – 1/2x28 standard thread for suppressors/compensators
- Length: 3.77"
- Material: 416R stainless steel
- Finish: Polished stainless
- Rifling: Conventional – compatible with lead, plated, or jacketed bullets
- Installation: Drop-in, no gunsmithing required
- Made in the USA
Looking for more ways to customize your SIG P365? Explore more SIG P365 barrels to compare styles, finishes, and performance features.
Complete your build with premium SIG Sauer accessories, or check out all True Precision barrels for more finish and fitment options.
💬 Frequently Asked Questions
Q: Will this threaded barrel fit the Sig P365 XL or XMACRO?
A: No, this barrel is specifically designed for the standard Sig P365. It will not fit XL or XMACRO models due to length and fitment differences.
Q: Is this barrel suppressor-ready?
A: Yes. The 1/2x28 thread pitch is standard for most 9mm suppressors and muzzle devices.
Q: Does this require a gunsmith to install?
A: No. It’s a true drop-in barrel—just remove the OEM barrel and install this one using standard takedown.
Q: Can I shoot lead bullets with this barrel?
A: Yes. The conventional rifling makes it compatible with lead, plated, and jacketed bullets.
Q: What’s the benefit of the 3.77” length?
A: The extended length offers better velocity, improved balance, and helps ensure full suppressor thread exposure when installed in a factory slide.
🔧 Upgrade Your SIG P365 Today
Shop premium SIG P365 accessories – barrels, sights, triggers & more from top brands like Faxon and True Precision.
🎯 Boost accuracy & performance
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WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to - www.P65Warnings.ca.gov.
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