True Precision TP-SHCB-XTG9mm LugerThreaded Barrel (1/2x28)1:10 Right Hand twist riflingEasy to install drop-in designAdvanced proprietary broach cut design specifically engineered for increased accuracy potentialBroach cut 6 groove rifling allows for all ammo types to be used safely, including cast lead100% Designed and manufactured in the USA with USASAAMI spec chamberImproved overall fit from OEM with added chamfers, improved radius cuts, and other additions for a better than OEM barrelManufacturer Lifetime performance warranty on functionSourced certified 416R stainless steelGold Titanium Nitride (TiN) Finish