Zaffiri Precision Threaded Barrel for G17L | Gen 1-3 | Spectrum

Zaffiri Precision Threaded Barrel for G17L Gen 3 | Spectrum

The Zaffiri Precision Threaded Barrel for G17L Gen 3 is a premium aftermarket barrel for Glock 17L Gen 1-3-compatible long-slide pistols. Built for shooters who want the extended G17L format with added muzzle-device capability, this barrel gives builders the correct long-slide fitment, drop-in installation, and threaded functionality needed for properly configured compensator or suppressor setups.

The Glock 17L uses a longer slide and barrel format than a standard Glock 17, so choosing the correct barrel is critical. This Zaffiri Precision barrel is designed for Glock 17L Gen 1-3-style slides and should not be used as a replacement for a standard Glock 17 barrel. For customers building a true long-slide pistol, replacing a worn G17L barrel, or completing a custom upper assembly, that compatibility distinction matters.

Zaffiri Precision machines this barrel from 416R stainless steel at its facility in Largo, Florida. The extended threaded muzzle supports compatible compensators, suppressors, and other properly matched muzzle devices, while conventional rifling supports a wide range of common lead, plated, and jacketed ammunition types. The drop-in design keeps installation straightforward when used with the correct Glock 17L-compatible components.

For shoppers comparing Glock 17L barrel options, this threaded configuration offers the most flexibility for external muzzle-device tuning. A flush-and-crown barrel keeps the front end simple, and a side-ported barrel adds built-in gas redirection, but a threaded G17L barrel gives builders more configuration options for range builds, suppressor-ready setups, and custom long-slide pistols where accessory compatibility is part of the plan.

This Zaffiri Precision Threaded Barrel for G17L Gen 3 is compatible with Zaffiri Precision ZPS.2, ZPS.3, Z Series, and IBS slide models. With U.S. manufacturing, 416R stainless steel construction, long-slide-specific fitment, and threaded muzzle capability, it is a strong upgrade for customers building a more capable Glock 17L Gen 1-3-compatible pistol.

Features

• Aftermarket threaded barrel for Glock 17L Gen 3-compatible pistols
• Compatible with Glock 17L Gen 1-3 long-slide configurations
• Designed for G17L slides; not for standard Glock 17 slides
• Extended threaded muzzle supports compatible compensators and suppressors
• Drop-in fit
• Machined from 416R stainless steel
• Manufactured in-house by Zaffiri Precision in Largo, Florida
• Designed for consistent fitment with OEM and aftermarket components
• Conventional rifling compatible with a wide range of ammunition types
• Compatible with Zaffiri Precision ZPS.2, ZPS.3, Z Series, and IBS slide models
• Precision machining adds a distinctive finished appearance
• Made in the USA

Compatibility Note: This is an aftermarket component designed for compatibility with Glock 17L Gen 1-3-style long-slide pistols. It is not manufactured by, endorsed by, or affiliated with Glock. This barrel is designed for Glock 17L-length slides and is not intended for standard Glock 17 slides. Threaded barrels and muzzle devices may be restricted in some jurisdictions; confirm all applicable laws before ordering.