Zaffiri Precision match grade barrels for Glock 17. High quality performance you demand with an easy drop-in barrel upgrade. Please note that this barrel is designed specifically to work with the Zaffiri ZPS.P and ZPS.4 Ported G17 Slides. This barrel is NOTdesigned to work with any other ZP cuts (ZPS.2 / ZPS.3) or any other manufacturer slides. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols. Specifications for Zaffiri Precision Glock 17 Gen 1-4 Flush and Crown Ported Pistol Barrel: Manufacturer: Zaffiri Precision Fabric/Material: 416R Stainless Steel Caliber: 9mm Luger Gun Make: Glock Gun Model: Glock 17 Gen 2, Glock 17 Gen 1, Glock 17 Gen 3, Glock 17 Gen 4 Model Generation: 1, 2, 4, 3 Barrel Length: 4.2 in Barrel Material: 416R Stainless Steel Barrel Twist Rate: 1-10 Flutes: No Weight: 6 oz Condition: New Quantity: 1 Features of Zaffiri Precision Glock 17 Gen 1-4 Flush and Crown Ported Pistol Barrel Stress relieved and heat treated to RC 40-42 Made to work with Lead, plated or jacketed ammunition Large ZP Logo machined on the Port Side of the lockup. Package Contents: Zaffiri Precision Glock 17 Gen 1-4 Flush and Crown Ported Pistol Barrel Which weapon models is Zaffiri Precision Glock 17 Gen 1-4 Flush and Crown Ported Pistol Barrel compatible with? Zaffiri Precision Glock 17 Gen 1-4 Flush and Crown Ported Pistol Barrel is compatible with Glock 17 Gen 2, Glock 17 Gen 1, Glock 17 Gen 3, Glock 17 Gen 4