Zaffiri Precision match grade barrels for Glock 17L (Long). High quality performance you demand with an easy drop-in barrel upgrade. Product Specifications Compatible for Glock 17L (LONG) Gen 1-3 Length: 5.95 inch Length: Flush and Crown flush with end of slide / inward crown shape Twist: 1/10 Quality: 416R Stainless Steel Polished feed ramp for easy feeding Target crown and oversized lock up area 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. Made in the USA