We are happy to introduce our Dirty Bird Barrels for Glocks! Proudly made and machined in the USA from 416R Stainless Steel, these barrels are the perfect upgrade for your next Glock build. Drop in fit for Gen 1-5 Glock Handguns Machined from 416 stainless steel and heat treated to RC 41 Fully supported SAAMI spec chamber and improved feed ramp design Target crown and oversized lock up area Assorted specialty coatings and finishes to choose from. Available in threaded or unthreaded options Backed by the Dirty Bird Industries Lifetime Warranty Made in the USA