Backup Tactical Glock 19 9MM Threaded Barrel OD Green. Every Backup Tactical product is created with the end user in mind; creating a product that will give the shooter a lifetime of dependability. It all starts with our top of the line Glock 19 9mm threaded barrel. These are Backup Tactical direct factory replacements that are manufactured to the strictest tolerances and meet or exceed OEM standards. When you need to upgrade your 9mm Glock choose Backup Tactical Specifications for Backup Tactical Glock 19 9MM Threaded Barrel: Manufacturer: Backup Tactical Condition: New Package Contents: Backup Tactical Glock 19 9MM Threaded Barrel Backup Tactical BACKG19TB-ODG: Glock 19 9MM Threaded Barrel OD Green