Zaffiri Precision Side Ported Glock 17 Gen 3 Glock 17 Gen 4 9mm Luger Non-Threaded Pistol Barrel 4.37in 1-10 RH Twist Nitride Black. Machined from 416R stainless steel these barrels are built for consistent fitment and dependable operation with standard components. The side port design offers a clean functional approach to porting while maintaining compatibility with select Zaffiri Precision slide models. A great choice whether you're upgrading a factory Glock pistol or building a custom clone using compatible components. Specifications for Zaffiri Precision Side Ported Glock 17 Gen 3 Glock 17 Gen 4 9mm Luger Non-Threaded Pistol Barrel: Manufacturer: Zaffiri Precision Fabric/Material: 416R Stainless Steel Caliber: 9mm Luger Gun Make: Glock Gun Model: Glock 17 Gen 4 Glock 17 Gen 3 Barrel Length: 4.37 in Threads per Inch: None Barrel Twist Rate: 1-10 RH Gun Type: Pistol Features of Zaffiri Precision Side Ported Glock 17 Gen 3 Glock 17 Gen 4 9mm Luger Non-Threaded Pistol Barrel Angled port design redirects gases laterally Ported design helps reduce muzzle rise and felt recoil Compatible with Zaffiri Precision Z Series Ported slides and legacy ZPS.4 and ZPS.P slides Port alignment and function are only guaranteed with compatible ported slide models Designed for consistent fitment with OEM and compatible aftermarket components Conventional rifling compatible with a wide range of ammunition types Designed for drop-in installation Package Contents: Zaffiri Precision Side Ported Glock 17 Gen 3 Glock 17 Gen 4 9mm Luger Non-Threaded Pistol Barrel What firearm models does the manufacturer say Zaffiri Precision Side Ported Glock 17 Gen 3 Glock 17 Gen 4 9mm Luger Non-Threaded Pistol Barrel is compatible with? The manufacturer suggests that Zaffiri Precision Side Ported Glock 17 Gen 3 Glock 17 Gen 4 9mm Luger Non-Threaded Pistol Barrel is compatible with Glock 17 Gen 3 Glock 17 Gen 4Zaffiri Precision BA-G17G14-SP-BN: Side Ported Glock 17 Gen 3 Glock 17 Gen 4 9mm Luger Non-Threaded Pistol Barrel 4.37in 1-10 RH Twist Nitride Black