Agency Arms Mid Line Barrels are for those who desire functionality as well as a unique appearance. While each of Agencys lines maintains the same core accuracy and reliability, their Mid Line focuses on additional machining enhancements and appearance while only having a modest price increase over the Standard Line models.Features :416R Stainless Steel Construction1/10 TwistTitanium Nitride (TiN) Gold FinishSits Flush with SlideDeep CrownLarge Agency A machined top of the LockupLarge AGENCY Machined on Port Side of the Lockup7 Gear Flutes Machined Around Circumference of BarrelFits GLOCK 19 Gen 5 Pistols