TPRCSN Threaded Barrel, 9MM, For Glock 19, Copper TiCN Finish, Includes Thread Protector TP-G19B-XTC True Precision" Inc. is located just outside Atlanta" Georgia" and was formed so that individuals will have access to high quality" US made parts and components for a wide array of firearms. True Precision barrels" slides" and parts are designed for personal defense first. All parts are engineered" machined" and made from the ground up here in the USA by Americans and in partnership with only American companies.