A Zaffiri Precision Glock 17 barrel is a match-grade drop-in upgrade built for shooters who want tighter tolerances and reliable performance out of their Gen 1–4 platform. Whether you're running a stock G17 for duty, competition, or recreational shooting, swapping to a quality aftermarket barrel can improve accuracy and cycling consistency. Zaffiri's barrels are crafted from 416R stainless steel, stress-relieved and heat-treated to precise hardness specs, and made to feed lead, plated, or jacketed rounds without fussing.

The barrel comes in two configurations to suit your needs. The threaded version runs 4.99 inches and is cut for 1/2 x 28 muzzle threads—ideal if you're planning to run a suppressor or compensator—and includes a thread protector in the box. If you prefer a traditional setup, the non-threaded model measures 4.34 inches with a flush and inward-crown profile that sits flush with your slide. Both barrels feature a 1/10 twist rate and the Zaffiri "ZP" logo machined into the lockup on the port side.

Installation is straightforward: these barrels drop in without gunsmithing. That said, before ordering a threaded barrel, confirm your local laws permit one—some jurisdictions restrict them. Once you've verified legality, you're looking at a solid, domestically made upgrade that'll cycle reliably day in and out. Pair it with quality ammunition and proper maintenance, and you'll notice the difference in lock-up and shot placement.

Key Features

• Match-grade 416R stainless steel construction
• Stress-relieved and heat-treated to RC 40–42 hardness
• Drop-in compatible with Glock 17 Gen 1, Gen 2, Gen 3, and Gen 4
• 1/10 twist rate for consistent bullet stabilization
• Functions reliably with lead, plated, and jacketed ammunition
• Two configurations: threaded (with included protector) or non-threaded flush-crown
• Made in the USA

Specifications

Manufacturer	Zaffiri Precision
Compatibility	Glock 17 Gen 1–4
Material	416R Stainless Steel
Finish	Black
Hardness	RC 40–42 (stress-relieved and heat-treated)
Twist Rate	1/10
Threaded Configuration Length	4.99"
Threaded Configuration Thread Size	1/2 x 28
Threaded Configuration Includes	Thread protector
Non-Threaded Configuration Length	4.34"
Non-Threaded Configuration Profile	Flush and inward crown (flush with slide)
Origin	Made in the USA

Frequently Asked Questions

Will this barrel work in my Glock 17 Gen 3 or Gen 4?

Yes. The Zaffiri Precision Glock 17 barrel is compatible with Glock 17 Gen 1, Gen 2, Gen 3, and Gen 4 models. It's a drop-in upgrade that requires no gunsmithing or permanent modifications.

Can I use a threaded or non-threaded version?

Both are available. The threaded barrel (4.99 inches) is cut for 1/2 x 28 muzzle threads and comes with a thread protector, making it suitable for suppressors or compensators if legal in your area. The non-threaded model (4.34 inches) features a flush-crown profile that sits flush with the slide. Before ordering threaded, verify that threaded pistol barrels are legal in your jurisdiction.

What ammunition does this barrel handle?

The Zaffiri barrel is manufactured to cycle reliably with lead, plated, and jacketed ammunition without issues.

Is this a drop-in replacement I can install myself?

Yes. Zaffiri barrels are designed as drop-in upgrades for the Glock 17 platform, requiring no gunsmithing or special tools for installation.