Wilson Combat TR556RCRG18FT8: Wilson Combat's stainless steel match-grade barrel offers superior accuracy, reliability and longevity for your next AR rifle project. It is precisely crafted from American-made 416R stainless steel on computer-controlled equipment to exacting specifications. The barrel features a hand-polished bore and feed ramps, crisp CNC markings, a precision muzzle crown, and a chamber and gas port optimized for reliability.