Compatible: for Glock 19 Gen 1-4 Twist: 1/10 Material: 416R Stainless Steel Heat Treatment: RC 40-42 Caliber: 9mm Length: Flush and Crown Compatible: for Glock 19 Gen 1-4 Twist: 1/10 Material: 416R Stainless Steel Heat Treatment: RC 40-42 Caliber: 9mm Length: Flush and Crown Zaffiri Precision match grade barrels for for Glock 19. High quality performance you demand with an easy drop-in barrel upgrade. Available with Titanium Nitride (TiN) Gold, Black Nitride, or Stainless finishes. Specifications Compatible for for Glock 19 Gen 1-4 will be too short for Gen 5 Length: Flush and Crown flush with end of slide / inward *crown shape Twist: 1/10 Quality: 416R Stainless Steel Stress relieved and heat treated to RC 40-42 Polished feed ramp for easy feeding Target crown and oversized lock up area Made to work with Lead, plated or jacketed ammunition Large *ZP Logo machined on the Port Side of the lockup. Made in the USA DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by for Glock. for Glock does not warrant or represent that this product is compatible with for Glock pistols.