TPRCSN Threaded Barrel, 9MM, Gold, Fits Glock 43/43X, Titanium Nitride TP-G43B-XTG Easy to install drop-in design. Advanced proprietary broach cut design specifically engineered for increased accuracy potential. Broach cut 6 groove rifling allows for all ammo types to be used safely" including cast lead. 100% Designed and manufactured in the USA with USA sourced certified steel.