Product DescriptionUpgrade your Glock 17 (Gen 11) with the Rosco Manufacturing Bloodline drop-in, match-grade barrel engineered to enhance accuracy and overall performance. Precision-made from 416R stainless steel, each barrel is broached, honed, and polished, then treated with a melonite (nitride) finish for added durability and wear resistance. Designed as an easy, user-friendly swap, this barrel is intended for use with SAAMI-approved, factory-new ammunition; consult a qualified gunsmith if you have any installation questions.Product Highlights Drop-in, match-grade replacement barrel designed to improve Glock 17 accuracy and performance 416R stainless steel construction with melonite (nitride black) finish for durability and corrosion resistance 4.49-inch overall/barrel length for Glock 17 standard-length fitment 1:10 twist rate optimized for 9mm projectiles Compatible with Glock 17 pistols, generations 1 through 4 Specs Brand: Rosco Manufacturing Product Line/Model: Bloodline Type: Handgun barrel Compatibility: Glock 17, Gen 11 (Gen 14 stated by manufacturer copy) Caliber: 9mm Barrel/Overall Length: 4.49 in Twist Rate: 1:10 Material: 416R stainless steel Finish: Melonite / Nitride black Ammunition Rating: SAAMI-approved, factory-new ammunition Manufacturer Part Number: BL-G17-9MM-M-STD UPC: 850039693014 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.