The Zaffiri Precision Upper Parts Kit provides all essential components for completing your Glock 19 Generation 4 upper assembly in a sleek black finish.Zaffiri Precision Upper Parts Kit (UPK-G19G4)Designed specifically for Glock 19 Gen 4 compatibilityBlack finish for professional appearanceComplete kit for upper receiver assemblyQuality components from Zaffiri PrecisionEssential for Glock builders gunsmiths and enthusiasts looking to complete or refresh their Glock 19 Gen 4 upper assembly with reliable precision-manufactured components.