The SI barrel thread Protector is a precision crafted accessory made from high-quality machined aluminum, designed to protect your firearm's crown and threads while enhancing its appearance. Perfect for those adding a compensator or suppressor to their custom pistol, this thread protector keeps the delicate threading of a suppressed barrel safe during transport or storage. With its sleek design, it not only offers essential protection but also adds a stylish, personalized touch to your firearm, making it a practical and attractive addition to any gun enthusiast's collection. Precision machined from 6061-T6 billet aluminum Compatible with live fire 9mm ammunition Faceted design facilitates straightforward installation