Agency Arms Mid Line Barrel focuses on additional machining enhancements and appearance. It is constructed of 416R stainless steel with pulled broached rifling and 8 Gear flutes machined around the circumference of the barrel. Caliber information is machined on the rear, while a large Agency "A" on top and "Agency" are machined on the port side of the lockup. This match grade, non-threaded model is compatible with Glock 43 and has a stainless steel finish and deep crown.