Owned and operated just outside Atlanta Georgia, True precision Match barrels are designed and manufactured in the USA to the strictes tolerances. Made from US sourced certified 416R Match Grade stainless steel. Rilling is broach cut with a proprietary process that ensures both peak accuracy and reliability. Enhanced fifling techniques, better overall fit, lockup, finish options, and higher quality control standards set True Precision barrels apart from both original OEM designs as well as other aftermarket barrels. Designed for all ammunition types including cast lead. Polished feed ramp. SAAMI Spec chamber. Heat Treated to spec at 42-44 HRC. Threaded 1/2"X28 TPI. Mfg: True Precision