The True Precision Glock 19 Barrel delivers enhanced accuracy and performance with DLC (Diamond-Like Carbon) finish and threaded design for 9MM caliber applications.True Precision Barrel for Glock 199MM caliber with threaded barrel designDLC (Diamond-Like Carbon) finish for durabilityAdvanced proprietary broach cut designEngineered for increased accuracy potential100% designed and manufactured in the USA with certified steelDesigned for personal defense applications this precision-engineered barrel is manufactured by True Precision Inc. using only USA-sourced materials and American partnerships to deliver superior quality and performance.