Dusk 19 Barrel for Glock 19 9mm models. Added hood fluting will reduce bearing surface on reciprocating surfaces. Added 1/2X8 Thread Pitch so you can attach muzzle devices and suppressors. Ready-to-use, pre-fit barrel allows for drop-in installation for an easy installation. With exacting tolerances, you can get greater shot-to-shot accuracy, maximizing performance in your handgun.