True Precision is located just outside of Atlanta, GA and was started by some highly skilled individuals who had not only a passion for developing the highest quality aftermarket parts but who also had access to high quality US made materials. True Precision breathes their motto of Personal Defense first into all the parts they develop and design. All parts are engineered, machined and finished from the ground up right here in the USA by Americans and in partnership with American companies. Features : 9mm Luger Threaded Barrel 1:10 Left Hand Twist Rifling Supported SAAMI Spec Chamber Finish note: The TiN coating will show wear at metal-to-metal contact points - primarily the locking lug face and barrel hood - over time. This is normal and does not affect function or accuracy.